Home / 11,139.64-15,367.26-9,370.60

Finding the Fourth Proportional to 11,139.64, 15,367.26 and 9,370.60

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Solution

The fourth proportional to 11,139.64, 15,367.26 and 9,370.60 is: 12,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.64 : 15,367.26 = 9,370.60 : x
  2. Step 2: Convert to fraction form
    11,139.64/15,367.26 = 9,370.60/x
  3. Step 3: Cross multiply
    11,139.64x = 15,367.26 × 9,370.60
  4. Step 4: Simplify right side
    11,139.64x = 144,000,446.56
  5. Step 5: Solve for x
    x = 144,000,446.56/11,139.64
  6. Step 6: Final answer
    x = 12,926.85

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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.