Home / 21,326.11-31,922.59-15,710.11

Finding the Fourth Proportional to 21,326.11, 31,922.59 and 15,710.11

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Solution

The fourth proportional to 21,326.11, 31,922.59 and 15,710.11 is: 23,516.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.11 : 31,922.59 = 15,710.11 : x
  2. Step 2: Convert to fraction form
    21,326.11/31,922.59 = 15,710.11/x
  3. Step 3: Cross multiply
    21,326.11x = 31,922.59 × 15,710.11
  4. Step 4: Simplify right side
    21,326.11x = 501,507,400.38
  5. Step 5: Solve for x
    x = 501,507,400.38/21,326.11
  6. Step 6: Final answer
    x = 23,516.12

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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.