Home / 13,561.52-18,715.20-9,589.76

Finding the Fourth Proportional to 13,561.52, 18,715.20 and 9,589.76

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Solution

The fourth proportional to 13,561.52, 18,715.20 and 9,589.76 is: 13,234.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.52 : 18,715.20 = 9,589.76 : x
  2. Step 2: Convert to fraction form
    13,561.52/18,715.20 = 9,589.76/x
  3. Step 3: Cross multiply
    13,561.52x = 18,715.20 × 9,589.76
  4. Step 4: Simplify right side
    13,561.52x = 179,474,276.35
  5. Step 5: Solve for x
    x = 179,474,276.35/13,561.52
  6. Step 6: Final answer
    x = 13,234.08

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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.