Home / 13,251.90-18,289.35-8,549.85

Finding the Fourth Proportional to 13,251.90, 18,289.35 and 8,549.85

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Solution

The fourth proportional to 13,251.90, 18,289.35 and 8,549.85 is: 11,799.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.90 : 18,289.35 = 8,549.85 : x
  2. Step 2: Convert to fraction form
    13,251.90/18,289.35 = 8,549.85/x
  3. Step 3: Cross multiply
    13,251.90x = 18,289.35 × 8,549.85
  4. Step 4: Simplify right side
    13,251.90x = 156,371,199.10
  5. Step 5: Solve for x
    x = 156,371,199.10/13,251.90
  6. Step 6: Final answer
    x = 11,799.91

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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.