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Finding the Fourth Proportional to 21,754.52, 32,630.66 and 12,753.63

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Solution

The fourth proportional to 21,754.52, 32,630.66 and 12,753.63 is: 19,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.52 : 32,630.66 = 12,753.63 : x
  2. Step 2: Convert to fraction form
    21,754.52/32,630.66 = 12,753.63/x
  3. Step 3: Cross multiply
    21,754.52x = 32,630.66 × 12,753.63
  4. Step 4: Simplify right side
    21,754.52x = 416,159,364.30
  5. Step 5: Solve for x
    x = 416,159,364.30/21,754.52
  6. Step 6: Final answer
    x = 19,129.79

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1.5x scale

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.