Home / 28,037.67-38,691.87-15,290.82

Finding the Fourth Proportional to 28,037.67, 38,691.87 and 15,290.82

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Solution

The fourth proportional to 28,037.67, 38,691.87 and 15,290.82 is: 21,101.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,037.67 : 38,691.87 = 15,290.82 : x
  2. Step 2: Convert to fraction form
    28,037.67/38,691.87 = 15,290.82/x
  3. Step 3: Cross multiply
    28,037.67x = 38,691.87 × 15,290.82
  4. Step 4: Simplify right side
    28,037.67x = 591,630,419.63
  5. Step 5: Solve for x
    x = 591,630,419.63/28,037.67
  6. Step 6: Final answer
    x = 21,101.27

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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.