Home / 15,311.86-21,131.17-8,597.14

Finding the Fourth Proportional to 15,311.86, 21,131.17 and 8,597.14

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Solution

The fourth proportional to 15,311.86, 21,131.17 and 8,597.14 is: 11,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.86 : 21,131.17 = 8,597.14 : x
  2. Step 2: Convert to fraction form
    15,311.86/21,131.17 = 8,597.14/x
  3. Step 3: Cross multiply
    15,311.86x = 21,131.17 × 8,597.14
  4. Step 4: Simplify right side
    15,311.86x = 181,667,626.85
  5. Step 5: Solve for x
    x = 181,667,626.85/15,311.86
  6. Step 6: Final answer
    x = 11,864.50

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Double scale
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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.