Home / 21,117,640.72-31,681,126.68-7,654,118.80

Finding the Fourth Proportional to 21,117,640.72, 31,681,126.68 and 7,654,118.80

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Solution

The fourth proportional to 21,117,640.72, 31,681,126.68 and 7,654,118.80 is: 11,482,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117,640.72 : 31,681,126.68 = 7,654,118.80 : x
  2. Step 2: Convert to fraction form
    21,117,640.72/31,681,126.68 = 7,654,118.80/x
  3. Step 3: Cross multiply
    21,117,640.72x = 31,681,126.68 × 7,654,118.80
  4. Step 4: Simplify right side
    21,117,640.72x = 242,491,107,326,569.56
  5. Step 5: Solve for x
    x = 242,491,107,326,569.56/21,117,640.72
  6. Step 6: Final answer
    x = 11,482,869.25

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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.