Home / 18,961.62-26,158.95-11,407.86

Finding the Fourth Proportional to 18,961.62, 26,158.95 and 11,407.86

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Solution

The fourth proportional to 18,961.62, 26,158.95 and 11,407.86 is: 15,737.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.62 : 26,158.95 = 11,407.86 : x
  2. Step 2: Convert to fraction form
    18,961.62/26,158.95 = 11,407.86/x
  3. Step 3: Cross multiply
    18,961.62x = 26,158.95 × 11,407.86
  4. Step 4: Simplify right side
    18,961.62x = 298,417,639.35
  5. Step 5: Solve for x
    x = 298,417,639.35/18,961.62
  6. Step 6: Final answer
    x = 15,737.98

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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.