Home / 15,454.44-21,311.13-13,223.70

Finding the Fourth Proportional to 15,454.44, 21,311.13 and 13,223.70

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Solution

The fourth proportional to 15,454.44, 21,311.13 and 13,223.70 is: 18,235.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.44 : 21,311.13 = 13,223.70 : x
  2. Step 2: Convert to fraction form
    15,454.44/21,311.13 = 13,223.70/x
  3. Step 3: Cross multiply
    15,454.44x = 21,311.13 × 13,223.70
  4. Step 4: Simplify right side
    15,454.44x = 281,811,989.78
  5. Step 5: Solve for x
    x = 281,811,989.78/15,454.44
  6. Step 6: Final answer
    x = 18,235.02

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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.