Home / 20,536.60-28,340.52-11,105.20

Finding the Fourth Proportional to 20,536.60, 28,340.52 and 11,105.20

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Solution

The fourth proportional to 20,536.60, 28,340.52 and 11,105.20 is: 15,325.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.60 : 28,340.52 = 11,105.20 : x
  2. Step 2: Convert to fraction form
    20,536.60/28,340.52 = 11,105.20/x
  3. Step 3: Cross multiply
    20,536.60x = 28,340.52 × 11,105.20
  4. Step 4: Simplify right side
    20,536.60x = 314,727,142.70
  5. Step 5: Solve for x
    x = 314,727,142.70/20,536.60
  6. Step 6: Final answer
    x = 15,325.18

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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.