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Finding the Fourth Proportional to 18,842.82, 28,264.20 and 7,156.02

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Solution

The fourth proportional to 18,842.82, 28,264.20 and 7,156.02 is: 10,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.82 : 28,264.20 = 7,156.02 : x
  2. Step 2: Convert to fraction form
    18,842.82/28,264.20 = 7,156.02/x
  3. Step 3: Cross multiply
    18,842.82x = 28,264.20 × 7,156.02
  4. Step 4: Simplify right side
    18,842.82x = 202,259,180.48
  5. Step 5: Solve for x
    x = 202,259,180.48/18,842.82
  6. Step 6: Final answer
    x = 10,734.02

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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.