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Finding the Fourth Proportional to 15,726.53, 21,702.52 and 8,652.53

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Solution

The fourth proportional to 15,726.53, 21,702.52 and 8,652.53 is: 11,940.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.53 : 21,702.52 = 8,652.53 : x
  2. Step 2: Convert to fraction form
    15,726.53/21,702.52 = 8,652.53/x
  3. Step 3: Cross multiply
    15,726.53x = 21,702.52 × 8,652.53
  4. Step 4: Simplify right side
    15,726.53x = 187,781,705.38
  5. Step 5: Solve for x
    x = 187,781,705.38/15,726.53
  6. Step 6: Final answer
    x = 11,940.44

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1.5x scale

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.