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Finding the Fourth Proportional to 15,827.52, 21,840.96 and 8,753.76

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Solution

The fourth proportional to 15,827.52, 21,840.96 and 8,753.76 is: 12,079.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,827.52 : 21,840.96 = 8,753.76 : x
  2. Step 2: Convert to fraction form
    15,827.52/21,840.96 = 8,753.76/x
  3. Step 3: Cross multiply
    15,827.52x = 21,840.96 × 8,753.76
  4. Step 4: Simplify right side
    15,827.52x = 191,190,522.01
  5. Step 5: Solve for x
    x = 191,190,522.01/15,827.52
  6. Step 6: Final answer
    x = 12,079.63

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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.