Home / 21,298,895.90-31,915,834.17-12,645,956.94

Finding the Fourth Proportional to 21,298,895.90, 31,915,834.17 and 12,645,956.94

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Solution

The fourth proportional to 21,298,895.90, 31,915,834.17 and 12,645,956.94 is: 18,949,633.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298,895.90 : 31,915,834.17 = 12,645,956.94 : x
  2. Step 2: Convert to fraction form
    21,298,895.90/31,915,834.17 = 12,645,956.94/x
  3. Step 3: Cross multiply
    21,298,895.90x = 31,915,834.17 × 12,645,956.94
  4. Step 4: Simplify right side
    21,298,895.90x = 403,606,264,618,000.62
  5. Step 5: Solve for x
    x = 403,606,264,618,000.62/21,298,895.90
  6. Step 6: Final answer
    x = 18,949,633.19

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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.