Home / 15,311.79-21,098.67-11,726.55

Finding the Fourth Proportional to 15,311.79, 21,098.67 and 11,726.55

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Solution

The fourth proportional to 15,311.79, 21,098.67 and 11,726.55 is: 16,158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.79 : 21,098.67 = 11,726.55 : x
  2. Step 2: Convert to fraction form
    15,311.79/21,098.67 = 11,726.55/x
  3. Step 3: Cross multiply
    15,311.79x = 21,098.67 × 11,726.55
  4. Step 4: Simplify right side
    15,311.79x = 247,414,608.69
  5. Step 5: Solve for x
    x = 247,414,608.69/15,311.79
  6. Step 6: Final answer
    x = 16,158.44

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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.