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Finding the Fourth Proportional to 28,990.52, 43,502.51 and 15,663.55

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Solution

The fourth proportional to 28,990.52, 43,502.51 and 15,663.55 is: 23,504.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.52 : 43,502.51 = 15,663.55 : x
  2. Step 2: Convert to fraction form
    28,990.52/43,502.51 = 15,663.55/x
  3. Step 3: Cross multiply
    28,990.52x = 43,502.51 × 15,663.55
  4. Step 4: Simplify right side
    28,990.52x = 681,403,867.93
  5. Step 5: Solve for x
    x = 681,403,867.93/28,990.52
  6. Step 6: Final answer
    x = 23,504.37

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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.