Home / 20,983.56-31,475.28-5,401.08

Finding the Fourth Proportional to 20,983.56, 31,475.28 and 5,401.08

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Solution

The fourth proportional to 20,983.56, 31,475.28 and 5,401.08 is: 8,101.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.56 : 31,475.28 = 5,401.08 : x
  2. Step 2: Convert to fraction form
    20,983.56/31,475.28 = 5,401.08/x
  3. Step 3: Cross multiply
    20,983.56x = 31,475.28 × 5,401.08
  4. Step 4: Simplify right side
    20,983.56x = 170,000,505.30
  5. Step 5: Solve for x
    x = 170,000,505.30/20,983.56
  6. Step 6: Final answer
    x = 8,101.60

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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.