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Finding the Fourth Proportional to 28,159.68, 42,202.20 and 14,983.68

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Solution

The fourth proportional to 28,159.68, 42,202.20 and 14,983.68 is: 22,455.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.68 : 42,202.20 = 14,983.68 : x
  2. Step 2: Convert to fraction form
    28,159.68/42,202.20 = 14,983.68/x
  3. Step 3: Cross multiply
    28,159.68x = 42,202.20 × 14,983.68
  4. Step 4: Simplify right side
    28,159.68x = 632,344,260.10
  5. Step 5: Solve for x
    x = 632,344,260.10/28,159.68
  6. Step 6: Final answer
    x = 22,455.66

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1.5x scale

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.