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Finding the Fourth Proportional to 28,925.21, 43,387 and 9,204.95

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Solution

The fourth proportional to 28,925.21, 43,387 and 9,204.95 is: 13,807.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,925.21 : 43,387 = 9,204.95 : x
  2. Step 2: Convert to fraction form
    28,925.21/43,387 = 9,204.95/x
  3. Step 3: Cross multiply
    28,925.21x = 43,387 × 9,204.95
  4. Step 4: Simplify right side
    28,925.21x = 399,375,165.65
  5. Step 5: Solve for x
    x = 399,375,165.65/28,925.21
  6. Step 6: Final answer
    x = 13,807.17

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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.