Home / 18,338.76-27,475.83-12,781.35

Finding the Fourth Proportional to 18,338.76, 27,475.83 and 12,781.35

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Solution

The fourth proportional to 18,338.76, 27,475.83 and 12,781.35 is: 19,149.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.76 : 27,475.83 = 12,781.35 : x
  2. Step 2: Convert to fraction form
    18,338.76/27,475.83 = 12,781.35/x
  3. Step 3: Cross multiply
    18,338.76x = 27,475.83 × 12,781.35
  4. Step 4: Simplify right side
    18,338.76x = 351,178,199.77
  5. Step 5: Solve for x
    x = 351,178,199.77/18,338.76
  6. Step 6: Final answer
    x = 19,149.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.