Home / 20,335.38-28,062.54-11,382.89

Finding the Fourth Proportional to 20,335.38, 28,062.54 and 11,382.89

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Solution

The fourth proportional to 20,335.38, 28,062.54 and 11,382.89 is: 15,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.38 : 28,062.54 = 11,382.89 : x
  2. Step 2: Convert to fraction form
    20,335.38/28,062.54 = 11,382.89/x
  3. Step 3: Cross multiply
    20,335.38x = 28,062.54 × 11,382.89
  4. Step 4: Simplify right side
    20,335.38x = 319,432,665.63
  5. Step 5: Solve for x
    x = 319,432,665.63/20,335.38
  6. Step 6: Final answer
    x = 15,708.22

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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.