Home / 28,101.06-38,778.30-15,354.68

Finding the Fourth Proportional to 28,101.06, 38,778.30 and 15,354.68

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Solution

The fourth proportional to 28,101.06, 38,778.30 and 15,354.68 is: 21,188.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.06 : 38,778.30 = 15,354.68 : x
  2. Step 2: Convert to fraction form
    28,101.06/38,778.30 = 15,354.68/x
  3. Step 3: Cross multiply
    28,101.06x = 38,778.30 × 15,354.68
  4. Step 4: Simplify right side
    28,101.06x = 595,428,193.55
  5. Step 5: Solve for x
    x = 595,428,193.55/28,101.06
  6. Step 6: Final answer
    x = 21,188.82

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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.