Home / 13,441.12-20,144.16-6,861.76

Finding the Fourth Proportional to 13,441.12, 20,144.16 and 6,861.76

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Solution

The fourth proportional to 13,441.12, 20,144.16 and 6,861.76 is: 10,283.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.12 : 20,144.16 = 6,861.76 : x
  2. Step 2: Convert to fraction form
    13,441.12/20,144.16 = 6,861.76/x
  3. Step 3: Cross multiply
    13,441.12x = 20,144.16 × 6,861.76
  4. Step 4: Simplify right side
    13,441.12x = 138,224,391.32
  5. Step 5: Solve for x
    x = 138,224,391.32/13,441.12
  6. Step 6: Final answer
    x = 10,283.70

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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.