Home / 13,517.34-20,258.70-5,715.42

Finding the Fourth Proportional to 13,517.34, 20,258.70 and 5,715.42

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Solution

The fourth proportional to 13,517.34, 20,258.70 and 5,715.42 is: 8,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.34 : 20,258.70 = 5,715.42 : x
  2. Step 2: Convert to fraction form
    13,517.34/20,258.70 = 5,715.42/x
  3. Step 3: Cross multiply
    13,517.34x = 20,258.70 × 5,715.42
  4. Step 4: Simplify right side
    13,517.34x = 115,786,979.15
  5. Step 5: Solve for x
    x = 115,786,979.15/13,517.34
  6. Step 6: Final answer
    x = 8,565.81

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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.