Home / 21,042.18-31,504.34-15,851.70

Finding the Fourth Proportional to 21,042.18, 31,504.34 and 15,851.70

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Solution

The fourth proportional to 21,042.18, 31,504.34 and 15,851.70 is: 23,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.18 : 31,504.34 = 15,851.70 : x
  2. Step 2: Convert to fraction form
    21,042.18/31,504.34 = 15,851.70/x
  3. Step 3: Cross multiply
    21,042.18x = 31,504.34 × 15,851.70
  4. Step 4: Simplify right side
    21,042.18x = 499,397,386.01
  5. Step 5: Solve for x
    x = 499,397,386.01/21,042.18
  6. Step 6: Final answer
    x = 23,733.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.