Home / 20,514,458.40-30,771,687.60-11,990,407.20

Finding the Fourth Proportional to 20,514,458.40, 30,771,687.60 and 11,990,407.20

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Solution

The fourth proportional to 20,514,458.40, 30,771,687.60 and 11,990,407.20 is: 17,985,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514,458.40 : 30,771,687.60 = 11,990,407.20 : x
  2. Step 2: Convert to fraction form
    20,514,458.40/30,771,687.60 = 11,990,407.20/x
  3. Step 3: Cross multiply
    20,514,458.40x = 30,771,687.60 × 11,990,407.20
  4. Step 4: Simplify right side
    20,514,458.40x = 368,965,064,555,190.69
  5. Step 5: Solve for x
    x = 368,965,064,555,190.69/20,514,458.40
  6. Step 6: Final answer
    x = 17,985,610.80

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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.