Home / 19,864.91-27,425.61-13,156.29

Finding the Fourth Proportional to 19,864.91, 27,425.61 and 13,156.29

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Solution

The fourth proportional to 19,864.91, 27,425.61 and 13,156.29 is: 18,163.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.91 : 27,425.61 = 13,156.29 : x
  2. Step 2: Convert to fraction form
    19,864.91/27,425.61 = 13,156.29/x
  3. Step 3: Cross multiply
    19,864.91x = 27,425.61 × 13,156.29
  4. Step 4: Simplify right side
    19,864.91x = 360,819,278.59
  5. Step 5: Solve for x
    x = 360,819,278.59/19,864.91
  6. Step 6: Final answer
    x = 18,163.65

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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.