Home / 20,542.32-28,348.35-11,110.86

Finding the Fourth Proportional to 20,542.32, 28,348.35 and 11,110.86

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Solution

The fourth proportional to 20,542.32, 28,348.35 and 11,110.86 is: 15,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.32 : 28,348.35 = 11,110.86 : x
  2. Step 2: Convert to fraction form
    20,542.32/28,348.35 = 11,110.86/x
  3. Step 3: Cross multiply
    20,542.32x = 28,348.35 × 11,110.86
  4. Step 4: Simplify right side
    20,542.32x = 314,974,548.08
  5. Step 5: Solve for x
    x = 314,974,548.08/20,542.32
  6. Step 6: Final answer
    x = 15,332.96

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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.