Home / 21,117,640.85-31,681,126.88-7,654,118.93

Finding the Fourth Proportional to 21,117,640.85, 31,681,126.88 and 7,654,118.93

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Solution

The fourth proportional to 21,117,640.85, 31,681,126.88 and 7,654,118.93 is: 11,482,869.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117,640.85 : 31,681,126.88 = 7,654,118.93 : x
  2. Step 2: Convert to fraction form
    21,117,640.85/31,681,126.88 = 7,654,118.93/x
  3. Step 3: Cross multiply
    21,117,640.85x = 31,681,126.88 × 7,654,118.93
  4. Step 4: Simplify right side
    21,117,640.85x = 242,491,112,779,263.59
  5. Step 5: Solve for x
    x = 242,491,112,779,263.59/21,117,640.85
  6. Step 6: Final answer
    x = 11,482,869.44

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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.