Home / 20,943.28-31,411.68-13,599.82

Finding the Fourth Proportional to 20,943.28, 31,411.68 and 13,599.82

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Solution

The fourth proportional to 20,943.28, 31,411.68 and 13,599.82 is: 20,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.28 : 31,411.68 = 13,599.82 : x
  2. Step 2: Convert to fraction form
    20,943.28/31,411.68 = 13,599.82/x
  3. Step 3: Cross multiply
    20,943.28x = 31,411.68 × 13,599.82
  4. Step 4: Simplify right side
    20,943.28x = 427,193,193.90
  5. Step 5: Solve for x
    x = 427,193,193.90/20,943.28
  6. Step 6: Final answer
    x = 20,397.63

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1.5x scale

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.