Home / 20,536.64-28,340.52-11,105.18

Finding the Fourth Proportional to 20,536.64, 28,340.52 and 11,105.18

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Solution

The fourth proportional to 20,536.64, 28,340.52 and 11,105.18 is: 15,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.64 : 28,340.52 = 11,105.18 : x
  2. Step 2: Convert to fraction form
    20,536.64/28,340.52 = 11,105.18/x
  3. Step 3: Cross multiply
    20,536.64x = 28,340.52 × 11,105.18
  4. Step 4: Simplify right side
    20,536.64x = 314,726,575.89
  5. Step 5: Solve for x
    x = 314,726,575.89/20,536.64
  6. Step 6: Final answer
    x = 15,325.13

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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.