Home / 21,301.13-31,955.48-8,814.38

Finding the Fourth Proportional to 21,301.13, 31,955.48 and 8,814.38

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Solution

The fourth proportional to 21,301.13, 31,955.48 and 8,814.38 is: 13,223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.13 : 31,955.48 = 8,814.38 : x
  2. Step 2: Convert to fraction form
    21,301.13/31,955.48 = 8,814.38/x
  3. Step 3: Cross multiply
    21,301.13x = 31,955.48 × 8,814.38
  4. Step 4: Simplify right side
    21,301.13x = 281,667,539.95
  5. Step 5: Solve for x
    x = 281,667,539.95/21,301.13
  6. Step 6: Final answer
    x = 13,223.13

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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.