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Finding the Fourth Proportional to 28,141.68, 42,175.26 and 14,965.68

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Solution

The fourth proportional to 28,141.68, 42,175.26 and 14,965.68 is: 22,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.68 : 42,175.26 = 14,965.68 : x
  2. Step 2: Convert to fraction form
    28,141.68/42,175.26 = 14,965.68/x
  3. Step 3: Cross multiply
    28,141.68x = 42,175.26 × 14,965.68
  4. Step 4: Simplify right side
    28,141.68x = 631,181,445.08
  5. Step 5: Solve for x
    x = 631,181,445.08/28,141.68
  6. Step 6: Final answer
    x = 22,428.71

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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.