Home / 17,679.20-26,475.60-8,434.40

Finding the Fourth Proportional to 17,679.20, 26,475.60 and 8,434.40

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Solution

The fourth proportional to 17,679.20, 26,475.60 and 8,434.40 is: 12,630.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,679.20 : 26,475.60 = 8,434.40 : x
  2. Step 2: Convert to fraction form
    17,679.20/26,475.60 = 8,434.40/x
  3. Step 3: Cross multiply
    17,679.20x = 26,475.60 × 8,434.40
  4. Step 4: Simplify right side
    17,679.20x = 223,305,800.64
  5. Step 5: Solve for x
    x = 223,305,800.64/17,679.20
  6. Step 6: Final answer
    x = 12,630.99

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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.