Home / 13,234.40-18,267.36-8,520.20

Finding the Fourth Proportional to 13,234.40, 18,267.36 and 8,520.20

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Solution

The fourth proportional to 13,234.40, 18,267.36 and 8,520.20 is: 11,760.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,234.40 : 18,267.36 = 8,520.20 : x
  2. Step 2: Convert to fraction form
    13,234.40/18,267.36 = 8,520.20/x
  3. Step 3: Cross multiply
    13,234.40x = 18,267.36 × 8,520.20
  4. Step 4: Simplify right side
    13,234.40x = 155,641,560.67
  5. Step 5: Solve for x
    x = 155,641,560.67/13,234.40
  6. Step 6: Final answer
    x = 11,760.38

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Half scale
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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.