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Finding the Fourth Proportional to 18,360,689.90, 25,337,961.88 and 10,520,044.32

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Solution

The fourth proportional to 18,360,689.90, 25,337,961.88 and 10,520,044.32 is: 14,517,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360,689.90 : 25,337,961.88 = 10,520,044.32 : x
  2. Step 2: Convert to fraction form
    18,360,689.90/25,337,961.88 = 10,520,044.32/x
  3. Step 3: Cross multiply
    18,360,689.90x = 25,337,961.88 × 10,520,044.32
  4. Step 4: Simplify right side
    18,360,689.90x = 266,556,481,956,070.53
  5. Step 5: Solve for x
    x = 266,556,481,956,070.53/18,360,689.90
  6. Step 6: Final answer
    x = 14,517,781.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.