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Finding the Fourth Proportional to 28,871, 43,307.76 and 9,151.02

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Solution

The fourth proportional to 28,871, 43,307.76 and 9,151.02 is: 13,726.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,871 : 43,307.76 = 9,151.02 : x
  2. Step 2: Convert to fraction form
    28,871/43,307.76 = 9,151.02/x
  3. Step 3: Cross multiply
    28,871x = 43,307.76 × 9,151.02
  4. Step 4: Simplify right side
    28,871x = 396,310,177.92
  5. Step 5: Solve for x
    x = 396,310,177.92/28,871
  6. Step 6: Final answer
    x = 13,726.93

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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.