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Finding the Fourth Proportional to 12,462,807.70, 18,692,829.15 and 10,215,025.30

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Solution

The fourth proportional to 12,462,807.70, 18,692,829.15 and 10,215,025.30 is: 15,321,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462,807.70 : 18,692,829.15 = 10,215,025.30 : x
  2. Step 2: Convert to fraction form
    12,462,807.70/18,692,829.15 = 10,215,025.30/x
  3. Step 3: Cross multiply
    12,462,807.70x = 18,692,829.15 × 10,215,025.30
  4. Step 4: Simplify right side
    12,462,807.70x = 190,947,722,695,827.50
  5. Step 5: Solve for x
    x = 190,947,722,695,827.50/12,462,807.70
  6. Step 6: Final answer
    x = 15,321,404.88

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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.