Home / 19,711.81-27,156.09-13,732.66

Finding the Fourth Proportional to 19,711.81, 27,156.09 and 13,732.66

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Solution

The fourth proportional to 19,711.81, 27,156.09 and 13,732.66 is: 18,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.81 : 27,156.09 = 13,732.66 : x
  2. Step 2: Convert to fraction form
    19,711.81/27,156.09 = 13,732.66/x
  3. Step 3: Cross multiply
    19,711.81x = 27,156.09 × 13,732.66
  4. Step 4: Simplify right side
    19,711.81x = 372,925,350.90
  5. Step 5: Solve for x
    x = 372,925,350.90/19,711.81
  6. Step 6: Final answer
    x = 18,918.88

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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.