Home / 20,536.57-28,338.36-15,161.86

Finding the Fourth Proportional to 20,536.57, 28,338.36 and 15,161.86

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Solution

The fourth proportional to 20,536.57, 28,338.36 and 15,161.86 is: 20,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.57 : 28,338.36 = 15,161.86 : x
  2. Step 2: Convert to fraction form
    20,536.57/28,338.36 = 15,161.86/x
  3. Step 3: Cross multiply
    20,536.57x = 28,338.36 × 15,161.86
  4. Step 4: Simplify right side
    20,536.57x = 429,662,246.95
  5. Step 5: Solve for x
    x = 429,662,246.95/20,536.57
  6. Step 6: Final answer
    x = 20,921.81

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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.