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Finding the Fourth Proportional to 13,593.48, 18,758.86 and 8,287.96

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Solution

The fourth proportional to 13,593.48, 18,758.86 and 8,287.96 is: 11,437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,593.48 : 18,758.86 = 8,287.96 : x
  2. Step 2: Convert to fraction form
    13,593.48/18,758.86 = 8,287.96/x
  3. Step 3: Cross multiply
    13,593.48x = 18,758.86 × 8,287.96
  4. Step 4: Simplify right side
    13,593.48x = 155,472,681.33
  5. Step 5: Solve for x
    x = 155,472,681.33/13,593.48
  6. Step 6: Final answer
    x = 11,437.30

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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.