Home / 15,167,972.76-20,931,897.30-8,198,635.94

Finding the Fourth Proportional to 15,167,972.76, 20,931,897.30 and 8,198,635.94

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Solution

The fourth proportional to 15,167,972.76, 20,931,897.30 and 8,198,635.94 is: 11,314,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167,972.76 : 20,931,897.30 = 8,198,635.94 : x
  2. Step 2: Convert to fraction form
    15,167,972.76/20,931,897.30 = 8,198,635.94/x
  3. Step 3: Cross multiply
    15,167,972.76x = 20,931,897.30 × 8,198,635.94
  4. Step 4: Simplify right side
    15,167,972.76x = 171,613,005,496,168.97
  5. Step 5: Solve for x
    x = 171,613,005,496,168.97/15,167,972.76
  6. Step 6: Final answer
    x = 11,314,168.89

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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.