Home / 13,614.17-18,789.59-8,312.07

Finding the Fourth Proportional to 13,614.17, 18,789.59 and 8,312.07

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Solution

The fourth proportional to 13,614.17, 18,789.59 and 8,312.07 is: 11,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.17 : 18,789.59 = 8,312.07 : x
  2. Step 2: Convert to fraction form
    13,614.17/18,789.59 = 8,312.07/x
  3. Step 3: Cross multiply
    13,614.17x = 18,789.59 × 8,312.07
  4. Step 4: Simplify right side
    13,614.17x = 156,180,387.35
  5. Step 5: Solve for x
    x = 156,180,387.35/13,614.17
  6. Step 6: Final answer
    x = 11,471.90

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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.