Home / 21,141,115.20-31,711,672.80-13,027,782.60

Finding the Fourth Proportional to 21,141,115.20, 31,711,672.80 and 13,027,782.60

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Solution

The fourth proportional to 21,141,115.20, 31,711,672.80 and 13,027,782.60 is: 19,541,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141,115.20 : 31,711,672.80 = 13,027,782.60 : x
  2. Step 2: Convert to fraction form
    21,141,115.20/31,711,672.80 = 13,027,782.60/x
  3. Step 3: Cross multiply
    21,141,115.20x = 31,711,672.80 × 13,027,782.60
  4. Step 4: Simplify right side
    21,141,115.20x = 413,132,779,120,733.25
  5. Step 5: Solve for x
    x = 413,132,779,120,733.25/21,141,115.20
  6. Step 6: Final answer
    x = 19,541,673.90

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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.