Home / 21,066,030.80-31,599,046.20-19,423,739.60

Finding the Fourth Proportional to 21,066,030.80, 31,599,046.20 and 19,423,739.60

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Solution

The fourth proportional to 21,066,030.80, 31,599,046.20 and 19,423,739.60 is: 29,135,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066,030.80 : 31,599,046.20 = 19,423,739.60 : x
  2. Step 2: Convert to fraction form
    21,066,030.80/31,599,046.20 = 19,423,739.60/x
  3. Step 3: Cross multiply
    21,066,030.80x = 31,599,046.20 × 19,423,739.60
  4. Step 4: Simplify right side
    21,066,030.80x = 613,771,644,997,169.50
  5. Step 5: Solve for x
    x = 613,771,644,997,169.50/21,066,030.80
  6. Step 6: Final answer
    x = 29,135,609.40

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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.