Home / 20,335.87-28,062.18-11,381.86

Finding the Fourth Proportional to 20,335.87, 28,062.18 and 11,381.86

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Solution

The fourth proportional to 20,335.87, 28,062.18 and 11,381.86 is: 15,706.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.87 : 28,062.18 = 11,381.86 : x
  2. Step 2: Convert to fraction form
    20,335.87/28,062.18 = 11,381.86/x
  3. Step 3: Cross multiply
    20,335.87x = 28,062.18 × 11,381.86
  4. Step 4: Simplify right side
    20,335.87x = 319,399,804.05
  5. Step 5: Solve for x
    x = 319,399,804.05/20,335.87
  6. Step 6: Final answer
    x = 15,706.23

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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.