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Finding the Fourth Proportional to 18,841.92, 28,263.84 and 7,156.08

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Solution

The fourth proportional to 18,841.92, 28,263.84 and 7,156.08 is: 10,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.92 : 28,263.84 = 7,156.08 : x
  2. Step 2: Convert to fraction form
    18,841.92/28,263.84 = 7,156.08/x
  3. Step 3: Cross multiply
    18,841.92x = 28,263.84 × 7,156.08
  4. Step 4: Simplify right side
    18,841.92x = 202,258,300.15
  5. Step 5: Solve for x
    x = 202,258,300.15/18,841.92
  6. Step 6: Final answer
    x = 10,734.48

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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.