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Finding the Fourth Proportional to 21,753.52, 32,629.16 and 12,752.63

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Solution

The fourth proportional to 21,753.52, 32,629.16 and 12,752.63 is: 19,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.52 : 32,629.16 = 12,752.63 : x
  2. Step 2: Convert to fraction form
    21,753.52/32,629.16 = 12,752.63/x
  3. Step 3: Cross multiply
    21,753.52x = 32,629.16 × 12,752.63
  4. Step 4: Simplify right side
    21,753.52x = 416,107,604.69
  5. Step 5: Solve for x
    x = 416,107,604.69/21,753.52
  6. Step 6: Final answer
    x = 19,128.29

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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.