Home / 12,478,712.20-18,732,065.10-9,651,358.60

Finding the Fourth Proportional to 12,478,712.20, 18,732,065.10 and 9,651,358.60

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Solution

The fourth proportional to 12,478,712.20, 18,732,065.10 and 9,651,358.60 is: 14,487,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,712.20 : 18,732,065.10 = 9,651,358.60 : x
  2. Step 2: Convert to fraction form
    12,478,712.20/18,732,065.10 = 9,651,358.60/x
  3. Step 3: Cross multiply
    12,478,712.20x = 18,732,065.10 × 9,651,358.60
  4. Step 4: Simplify right side
    12,478,712.20x = 180,789,877,598,644.88
  5. Step 5: Solve for x
    x = 180,789,877,598,644.88/12,478,712.20
  6. Step 6: Final answer
    x = 14,487,863.39

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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.