Home / 15,306.35-21,123.56-8,591.63

Finding the Fourth Proportional to 15,306.35, 21,123.56 and 8,591.63

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Solution

The fourth proportional to 15,306.35, 21,123.56 and 8,591.63 is: 11,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.35 : 21,123.56 = 8,591.63 : x
  2. Step 2: Convert to fraction form
    15,306.35/21,123.56 = 8,591.63/x
  3. Step 3: Cross multiply
    15,306.35x = 21,123.56 × 8,591.63
  4. Step 4: Simplify right side
    15,306.35x = 181,485,727.66
  5. Step 5: Solve for x
    x = 181,485,727.66/15,306.35
  6. Step 6: Final answer
    x = 11,856.90

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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.