Home / 13,610.04-18,781.38-8,313.72

Finding the Fourth Proportional to 13,610.04, 18,781.38 and 8,313.72

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Solution

The fourth proportional to 13,610.04, 18,781.38 and 8,313.72 is: 11,472.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.04 : 18,781.38 = 8,313.72 : x
  2. Step 2: Convert to fraction form
    13,610.04/18,781.38 = 8,313.72/x
  3. Step 3: Cross multiply
    13,610.04x = 18,781.38 × 8,313.72
  4. Step 4: Simplify right side
    13,610.04x = 156,143,134.53
  5. Step 5: Solve for x
    x = 156,143,134.53/13,610.04
  6. Step 6: Final answer
    x = 11,472.64

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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.