Home / 28,490.52-39,316.74-15,743.66

Finding the Fourth Proportional to 28,490.52, 39,316.74 and 15,743.66

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Solution

The fourth proportional to 28,490.52, 39,316.74 and 15,743.66 is: 21,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.52 : 39,316.74 = 15,743.66 : x
  2. Step 2: Convert to fraction form
    28,490.52/39,316.74 = 15,743.66/x
  3. Step 3: Cross multiply
    28,490.52x = 39,316.74 × 15,743.66
  4. Step 4: Simplify right side
    28,490.52x = 618,989,190.28
  5. Step 5: Solve for x
    x = 618,989,190.28/28,490.52
  6. Step 6: Final answer
    x = 21,726.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.