Home / 20,401.28-30,598.28-12,983.72

Finding the Fourth Proportional to 20,401.28, 30,598.28 and 12,983.72

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Solution

The fourth proportional to 20,401.28, 30,598.28 and 12,983.72 is: 19,473.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.28 : 30,598.28 = 12,983.72 : x
  2. Step 2: Convert to fraction form
    20,401.28/30,598.28 = 12,983.72/x
  3. Step 3: Cross multiply
    20,401.28x = 30,598.28 × 12,983.72
  4. Step 4: Simplify right side
    20,401.28x = 397,279,500.00
  5. Step 5: Solve for x
    x = 397,279,500.00/20,401.28
  6. Step 6: Final answer
    x = 19,473.26

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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.