Home / 10,759.20-16,138.80-8,167.20

Finding the Fourth Proportional to 10,759.20, 16,138.80 and 8,167.20

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Solution

The fourth proportional to 10,759.20, 16,138.80 and 8,167.20 is: 12,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,759.20 : 16,138.80 = 8,167.20 : x
  2. Step 2: Convert to fraction form
    10,759.20/16,138.80 = 8,167.20/x
  3. Step 3: Cross multiply
    10,759.20x = 16,138.80 × 8,167.20
  4. Step 4: Simplify right side
    10,759.20x = 131,808,807.36
  5. Step 5: Solve for x
    x = 131,808,807.36/10,759.20
  6. Step 6: Final answer
    x = 12,250.80

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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.