Home / 20,715,497.40-31,073,246.10-7,929,420.60

Finding the Fourth Proportional to 20,715,497.40, 31,073,246.10 and 7,929,420.60

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Solution

The fourth proportional to 20,715,497.40, 31,073,246.10 and 7,929,420.60 is: 11,894,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715,497.40 : 31,073,246.10 = 7,929,420.60 : x
  2. Step 2: Convert to fraction form
    20,715,497.40/31,073,246.10 = 7,929,420.60/x
  3. Step 3: Cross multiply
    20,715,497.40x = 31,073,246.10 × 7,929,420.60
  4. Step 4: Simplify right side
    20,715,497.40x = 246,392,837,734,209.66
  5. Step 5: Solve for x
    x = 246,392,837,734,209.66/20,715,497.40
  6. Step 6: Final answer
    x = 11,894,130.90

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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.