Home / 15,424.16-21,286.02-8,709.85

Finding the Fourth Proportional to 15,424.16, 21,286.02 and 8,709.85

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Solution

The fourth proportional to 15,424.16, 21,286.02 and 8,709.85 is: 12,019.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.16 : 21,286.02 = 8,709.85 : x
  2. Step 2: Convert to fraction form
    15,424.16/21,286.02 = 8,709.85/x
  3. Step 3: Cross multiply
    15,424.16x = 21,286.02 × 8,709.85
  4. Step 4: Simplify right side
    15,424.16x = 185,397,934.87
  5. Step 5: Solve for x
    x = 185,397,934.87/15,424.16
  6. Step 6: Final answer
    x = 12,019.97

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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.