Home / 28,261.92-38,997.12-16,928.76

Finding the Fourth Proportional to 28,261.92, 38,997.12 and 16,928.76

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Solution

The fourth proportional to 28,261.92, 38,997.12 and 16,928.76 is: 23,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.92 : 38,997.12 = 16,928.76 : x
  2. Step 2: Convert to fraction form
    28,261.92/38,997.12 = 16,928.76/x
  3. Step 3: Cross multiply
    28,261.92x = 38,997.12 × 16,928.76
  4. Step 4: Simplify right side
    28,261.92x = 660,172,885.17
  5. Step 5: Solve for x
    x = 660,172,885.17/28,261.92
  6. Step 6: Final answer
    x = 23,359.10

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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.