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Finding the Fourth Proportional to 12,497,641.60, 18,702,916.80 and 7,452,572.80

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Solution

The fourth proportional to 12,497,641.60, 18,702,916.80 and 7,452,572.80 is: 11,152,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,497,641.60 : 18,702,916.80 = 7,452,572.80 : x
  2. Step 2: Convert to fraction form
    12,497,641.60/18,702,916.80 = 7,452,572.80/x
  3. Step 3: Cross multiply
    12,497,641.60x = 18,702,916.80 × 7,452,572.80
  4. Step 4: Simplify right side
    12,497,641.60x = 139,384,849,024,343.05
  5. Step 5: Solve for x
    x = 139,384,849,024,343.05/12,497,641.60
  6. Step 6: Final answer
    x = 11,152,892.16

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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.