Home / 21,291.71-31,941.45-7,251.08

Finding the Fourth Proportional to 21,291.71, 31,941.45 and 7,251.08

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Solution

The fourth proportional to 21,291.71, 31,941.45 and 7,251.08 is: 10,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.71 : 31,941.45 = 7,251.08 : x
  2. Step 2: Convert to fraction form
    21,291.71/31,941.45 = 7,251.08/x
  3. Step 3: Cross multiply
    21,291.71x = 31,941.45 × 7,251.08
  4. Step 4: Simplify right side
    21,291.71x = 231,609,849.56
  5. Step 5: Solve for x
    x = 231,609,849.56/21,291.71
  6. Step 6: Final answer
    x = 10,877.93

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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.