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Finding the Fourth Proportional to 28,459, 42,699.84 and 14,411.44

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Solution

The fourth proportional to 28,459, 42,699.84 and 14,411.44 is: 21,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459 : 42,699.84 = 14,411.44 : x
  2. Step 2: Convert to fraction form
    28,459/42,699.84 = 14,411.44/x
  3. Step 3: Cross multiply
    28,459x = 42,699.84 × 14,411.44
  4. Step 4: Simplify right side
    28,459x = 615,366,182.17
  5. Step 5: Solve for x
    x = 615,366,182.17/28,459
  6. Step 6: Final answer
    x = 21,622.90

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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.