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Finding the Fourth Proportional to 42,326.76, 63,489.60 and 14,253

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Solution

The fourth proportional to 42,326.76, 63,489.60 and 14,253 is: 21,379.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,326.76 : 63,489.60 = 14,253 : x
  2. Step 2: Convert to fraction form
    42,326.76/63,489.60 = 14,253/x
  3. Step 3: Cross multiply
    42,326.76x = 63,489.60 × 14,253
  4. Step 4: Simplify right side
    42,326.76x = 904,917,268.80
  5. Step 5: Solve for x
    x = 904,917,268.80/42,326.76
  6. Step 6: Final answer
    x = 21,379.32

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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.