Home / 20,335.32-28,062.89-11,383.65

Finding the Fourth Proportional to 20,335.32, 28,062.89 and 11,383.65

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Solution

The fourth proportional to 20,335.32, 28,062.89 and 11,383.65 is: 15,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.32 : 28,062.89 = 11,383.65 : x
  2. Step 2: Convert to fraction form
    20,335.32/28,062.89 = 11,383.65/x
  3. Step 3: Cross multiply
    20,335.32x = 28,062.89 × 11,383.65
  4. Step 4: Simplify right side
    20,335.32x = 319,458,060.83
  5. Step 5: Solve for x
    x = 319,458,060.83/20,335.32
  6. Step 6: Final answer
    x = 15,709.52

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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.