Home / 21,131.17-31,702.02-6,340.36

Finding the Fourth Proportional to 21,131.17, 31,702.02 and 6,340.36

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Solution

The fourth proportional to 21,131.17, 31,702.02 and 6,340.36 is: 9,512.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.17 : 31,702.02 = 6,340.36 : x
  2. Step 2: Convert to fraction form
    21,131.17/31,702.02 = 6,340.36/x
  3. Step 3: Cross multiply
    21,131.17x = 31,702.02 × 6,340.36
  4. Step 4: Simplify right side
    21,131.17x = 201,002,140.27
  5. Step 5: Solve for x
    x = 201,002,140.27/21,131.17
  6. Step 6: Final answer
    x = 9,512.12

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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.