Home / 19,869.42-27,431.82-13,160.76

Finding the Fourth Proportional to 19,869.42, 27,431.82 and 13,160.76

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Solution

The fourth proportional to 19,869.42, 27,431.82 and 13,160.76 is: 18,169.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.42 : 27,431.82 = 13,160.76 : x
  2. Step 2: Convert to fraction form
    19,869.42/27,431.82 = 13,160.76/x
  3. Step 3: Cross multiply
    19,869.42x = 27,431.82 × 13,160.76
  4. Step 4: Simplify right side
    19,869.42x = 361,023,599.38
  5. Step 5: Solve for x
    x = 361,023,599.38/19,869.42
  6. Step 6: Final answer
    x = 18,169.81

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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.