Home / 10,917.20-16,327.20-9,167.60

Finding the Fourth Proportional to 10,917.20, 16,327.20 and 9,167.60

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Solution

The fourth proportional to 10,917.20, 16,327.20 and 9,167.60 is: 13,710.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.20 : 16,327.20 = 9,167.60 : x
  2. Step 2: Convert to fraction form
    10,917.20/16,327.20 = 9,167.60/x
  3. Step 3: Cross multiply
    10,917.20x = 16,327.20 × 9,167.60
  4. Step 4: Simplify right side
    10,917.20x = 149,681,238.72
  5. Step 5: Solve for x
    x = 149,681,238.72/10,917.20
  6. Step 6: Final answer
    x = 13,710.59

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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.