Home / 13,715.27-20,569.82-8,170.20

Finding the Fourth Proportional to 13,715.27, 20,569.82 and 8,170.20

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Solution

The fourth proportional to 13,715.27, 20,569.82 and 8,170.20 is: 12,253.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.27 : 20,569.82 = 8,170.20 : x
  2. Step 2: Convert to fraction form
    13,715.27/20,569.82 = 8,170.20/x
  3. Step 3: Cross multiply
    13,715.27x = 20,569.82 × 8,170.20
  4. Step 4: Simplify right side
    13,715.27x = 168,059,543.36
  5. Step 5: Solve for x
    x = 168,059,543.36/13,715.27
  6. Step 6: Final answer
    x = 12,253.46

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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.