Home / 20,335.76-28,064.59-11,383.82

Finding the Fourth Proportional to 20,335.76, 28,064.59 and 11,383.82

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Solution

The fourth proportional to 20,335.76, 28,064.59 and 11,383.82 is: 15,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.76 : 28,064.59 = 11,383.82 : x
  2. Step 2: Convert to fraction form
    20,335.76/28,064.59 = 11,383.82/x
  3. Step 3: Cross multiply
    20,335.76x = 28,064.59 × 11,383.82
  4. Step 4: Simplify right side
    20,335.76x = 319,482,072.15
  5. Step 5: Solve for x
    x = 319,482,072.15/20,335.76
  6. Step 6: Final answer
    x = 15,710.36

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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.