Home / 21,253.38-31,866.40-10,159.82

Finding the Fourth Proportional to 21,253.38, 31,866.40 and 10,159.82

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Solution

The fourth proportional to 21,253.38, 31,866.40 and 10,159.82 is: 15,233.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.38 : 31,866.40 = 10,159.82 : x
  2. Step 2: Convert to fraction form
    21,253.38/31,866.40 = 10,159.82/x
  3. Step 3: Cross multiply
    21,253.38x = 31,866.40 × 10,159.82
  4. Step 4: Simplify right side
    21,253.38x = 323,756,837.25
  5. Step 5: Solve for x
    x = 323,756,837.25/21,253.38
  6. Step 6: Final answer
    x = 15,233.19

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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.