Home / 28,656.76-42,974.20-11,122.48

Finding the Fourth Proportional to 28,656.76, 42,974.20 and 11,122.48

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Solution

The fourth proportional to 28,656.76, 42,974.20 and 11,122.48 is: 16,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.76 : 42,974.20 = 11,122.48 : x
  2. Step 2: Convert to fraction form
    28,656.76/42,974.20 = 11,122.48/x
  3. Step 3: Cross multiply
    28,656.76x = 42,974.20 × 11,122.48
  4. Step 4: Simplify right side
    28,656.76x = 477,979,680.02
  5. Step 5: Solve for x
    x = 477,979,680.02/28,656.76
  6. Step 6: Final answer
    x = 16,679.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.