Home / 28,077.22-38,745.21-15,330.88

Finding the Fourth Proportional to 28,077.22, 38,745.21 and 15,330.88

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Solution

The fourth proportional to 28,077.22, 38,745.21 and 15,330.88 is: 21,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.22 : 38,745.21 = 15,330.88 : x
  2. Step 2: Convert to fraction form
    28,077.22/38,745.21 = 15,330.88/x
  3. Step 3: Cross multiply
    28,077.22x = 38,745.21 × 15,330.88
  4. Step 4: Simplify right side
    28,077.22x = 593,998,165.08
  5. Step 5: Solve for x
    x = 593,998,165.08/28,077.22
  6. Step 6: Final answer
    x = 21,155.88

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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.