Home / 15,638.40-23,469.84-8,247.20

Finding the Fourth Proportional to 15,638.40, 23,469.84 and 8,247.20

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Solution

The fourth proportional to 15,638.40, 23,469.84 and 8,247.20 is: 12,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.40 : 23,469.84 = 8,247.20 : x
  2. Step 2: Convert to fraction form
    15,638.40/23,469.84 = 8,247.20/x
  3. Step 3: Cross multiply
    15,638.40x = 23,469.84 × 8,247.20
  4. Step 4: Simplify right side
    15,638.40x = 193,560,464.45
  5. Step 5: Solve for x
    x = 193,560,464.45/15,638.40
  6. Step 6: Final answer
    x = 12,377.25

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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.