Home / 13,291.56-18,327.24-8,505.12

Finding the Fourth Proportional to 13,291.56, 18,327.24 and 8,505.12

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Solution

The fourth proportional to 13,291.56, 18,327.24 and 8,505.12 is: 11,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.56 : 18,327.24 = 8,505.12 : x
  2. Step 2: Convert to fraction form
    13,291.56/18,327.24 = 8,505.12/x
  3. Step 3: Cross multiply
    13,291.56x = 18,327.24 × 8,505.12
  4. Step 4: Simplify right side
    13,291.56x = 155,875,375.47
  5. Step 5: Solve for x
    x = 155,875,375.47/13,291.56
  6. Step 6: Final answer
    x = 11,727.40

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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.