Home / 15,306.53-21,122.66-8,591.99

Finding the Fourth Proportional to 15,306.53, 21,122.66 and 8,591.99

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Solution

The fourth proportional to 15,306.53, 21,122.66 and 8,591.99 is: 11,856.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.53 : 21,122.66 = 8,591.99 : x
  2. Step 2: Convert to fraction form
    15,306.53/21,122.66 = 8,591.99/x
  3. Step 3: Cross multiply
    15,306.53x = 21,122.66 × 8,591.99
  4. Step 4: Simplify right side
    15,306.53x = 181,485,599.36
  5. Step 5: Solve for x
    x = 181,485,599.36/15,306.53
  6. Step 6: Final answer
    x = 11,856.75

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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.