Home / 13,920.63-20,882.15-3,532.38

Finding the Fourth Proportional to 13,920.63, 20,882.15 and 3,532.38

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Solution

The fourth proportional to 13,920.63, 20,882.15 and 3,532.38 is: 5,298.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.63 : 20,882.15 = 3,532.38 : x
  2. Step 2: Convert to fraction form
    13,920.63/20,882.15 = 3,532.38/x
  3. Step 3: Cross multiply
    13,920.63x = 20,882.15 × 3,532.38
  4. Step 4: Simplify right side
    13,920.63x = 73,763,689.02
  5. Step 5: Solve for x
    x = 73,763,689.02/13,920.63
  6. Step 6: Final answer
    x = 5,298.88

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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.