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Finding the Fourth Proportional to 15,753.48, 21,743.50 and 9,789.65

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Solution

The fourth proportional to 15,753.48, 21,743.50 and 9,789.65 is: 13,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,753.48 : 21,743.50 = 9,789.65 : x
  2. Step 2: Convert to fraction form
    15,753.48/21,743.50 = 9,789.65/x
  3. Step 3: Cross multiply
    15,753.48x = 21,743.50 × 9,789.65
  4. Step 4: Simplify right side
    15,753.48x = 212,861,254.78
  5. Step 5: Solve for x
    x = 212,861,254.78/15,753.48
  6. Step 6: Final answer
    x = 13,512.01

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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.