Home / 36,821.72-55,216.16-13,431.76

Finding the Fourth Proportional to 36,821.72, 55,216.16 and 13,431.76

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Solution

The fourth proportional to 36,821.72, 55,216.16 and 13,431.76 is: 20,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,821.72 : 55,216.16 = 13,431.76 : x
  2. Step 2: Convert to fraction form
    36,821.72/55,216.16 = 13,431.76/x
  3. Step 3: Cross multiply
    36,821.72x = 55,216.16 × 13,431.76
  4. Step 4: Simplify right side
    36,821.72x = 741,650,209.24
  5. Step 5: Solve for x
    x = 741,650,209.24/36,821.72
  6. Step 6: Final answer
    x = 20,141.65

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Double scale
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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.