Home / 21,387,186.30-32,080,779.45-12,884,130.30

Finding the Fourth Proportional to 21,387,186.30, 32,080,779.45 and 12,884,130.30

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Solution

The fourth proportional to 21,387,186.30, 32,080,779.45 and 12,884,130.30 is: 19,326,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387,186.30 : 32,080,779.45 = 12,884,130.30 : x
  2. Step 2: Convert to fraction form
    21,387,186.30/32,080,779.45 = 12,884,130.30/x
  3. Step 3: Cross multiply
    21,387,186.30x = 32,080,779.45 × 12,884,130.30
  4. Step 4: Simplify right side
    21,387,186.30x = 413,332,942,559,362.38
  5. Step 5: Solve for x
    x = 413,332,942,559,362.38/21,387,186.30
  6. Step 6: Final answer
    x = 19,326,195.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.