Home / 13,949.28-20,921.16-6,921.96

Finding the Fourth Proportional to 13,949.28, 20,921.16 and 6,921.96

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Solution

The fourth proportional to 13,949.28, 20,921.16 and 6,921.96 is: 10,381.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.28 : 20,921.16 = 6,921.96 : x
  2. Step 2: Convert to fraction form
    13,949.28/20,921.16 = 6,921.96/x
  3. Step 3: Cross multiply
    13,949.28x = 20,921.16 × 6,921.96
  4. Step 4: Simplify right side
    13,949.28x = 144,815,432.67
  5. Step 5: Solve for x
    x = 144,815,432.67/13,949.28
  6. Step 6: Final answer
    x = 10,381.57

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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.