Home / 13,217.53-18,239.01-9,251.77

Finding the Fourth Proportional to 13,217.53, 18,239.01 and 9,251.77

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Solution

The fourth proportional to 13,217.53, 18,239.01 and 9,251.77 is: 12,766.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.53 : 18,239.01 = 9,251.77 : x
  2. Step 2: Convert to fraction form
    13,217.53/18,239.01 = 9,251.77/x
  3. Step 3: Cross multiply
    13,217.53x = 18,239.01 × 9,251.77
  4. Step 4: Simplify right side
    13,217.53x = 168,743,125.55
  5. Step 5: Solve for x
    x = 168,743,125.55/13,217.53
  6. Step 6: Final answer
    x = 12,766.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.