Home / 13,245.52-18,178.88-12,119.20

Finding the Fourth Proportional to 13,245.52, 18,178.88 and 12,119.20

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Solution

The fourth proportional to 13,245.52, 18,178.88 and 12,119.20 is: 16,633.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.52 : 18,178.88 = 12,119.20 : x
  2. Step 2: Convert to fraction form
    13,245.52/18,178.88 = 12,119.20/x
  3. Step 3: Cross multiply
    13,245.52x = 18,178.88 × 12,119.20
  4. Step 4: Simplify right side
    13,245.52x = 220,313,482.50
  5. Step 5: Solve for x
    x = 220,313,482.50/13,245.52
  6. Step 6: Final answer
    x = 16,633.06

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.