Home / 12,478,545.20-18,700,321.80-9,924,129.20

Finding the Fourth Proportional to 12,478,545.20, 18,700,321.80 and 9,924,129.20

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Solution

The fourth proportional to 12,478,545.20, 18,700,321.80 and 9,924,129.20 is: 14,872,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,545.20 : 18,700,321.80 = 9,924,129.20 : x
  2. Step 2: Convert to fraction form
    12,478,545.20/18,700,321.80 = 9,924,129.20/x
  3. Step 3: Cross multiply
    12,478,545.20x = 18,700,321.80 × 9,924,129.20
  4. Step 4: Simplify right side
    12,478,545.20x = 185,584,409,624,776.56
  5. Step 5: Solve for x
    x = 185,584,409,624,776.56/12,478,545.20
  6. Step 6: Final answer
    x = 14,872,279.31

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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.