Home / 21,124.59-31,684.45-5,543.43

Finding the Fourth Proportional to 21,124.59, 31,684.45 and 5,543.43

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Solution

The fourth proportional to 21,124.59, 31,684.45 and 5,543.43 is: 8,314.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.59 : 31,684.45 = 5,543.43 : x
  2. Step 2: Convert to fraction form
    21,124.59/31,684.45 = 5,543.43/x
  3. Step 3: Cross multiply
    21,124.59x = 31,684.45 × 5,543.43
  4. Step 4: Simplify right side
    21,124.59x = 175,640,530.66
  5. Step 5: Solve for x
    x = 175,640,530.66/21,124.59
  6. Step 6: Final answer
    x = 8,314.51

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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.