Home / 12,456,446.60-18,684,669.90-7,648,545.80

Finding the Fourth Proportional to 12,456,446.60, 18,684,669.90 and 7,648,545.80

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Solution

The fourth proportional to 12,456,446.60, 18,684,669.90 and 7,648,545.80 is: 11,472,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,446.60 : 18,684,669.90 = 7,648,545.80 : x
  2. Step 2: Convert to fraction form
    12,456,446.60/18,684,669.90 = 7,648,545.80/x
  3. Step 3: Cross multiply
    12,456,446.60x = 18,684,669.90 × 7,648,545.80
  4. Step 4: Simplify right side
    12,456,446.60x = 142,910,553,488,031.41
  5. Step 5: Solve for x
    x = 142,910,553,488,031.41/12,456,446.60
  6. Step 6: Final answer
    x = 11,472,818.70

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Similar ratio
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1.5x scale

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.