Home / 11,538.16-15,913.60-8,351.92

Finding the Fourth Proportional to 11,538.16, 15,913.60 and 8,351.92

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Solution

The fourth proportional to 11,538.16, 15,913.60 and 8,351.92 is: 11,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,538.16 : 15,913.60 = 8,351.92 : x
  2. Step 2: Convert to fraction form
    11,538.16/15,913.60 = 8,351.92/x
  3. Step 3: Cross multiply
    11,538.16x = 15,913.60 × 8,351.92
  4. Step 4: Simplify right side
    11,538.16x = 132,909,113.12
  5. Step 5: Solve for x
    x = 132,909,113.12/11,538.16
  6. Step 6: Final answer
    x = 11,519.09

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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.