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Finding the Fourth Proportional to 18,914.32, 28,375.22 and 5,587.54

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Solution

The fourth proportional to 18,914.32, 28,375.22 and 5,587.54 is: 8,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.32 : 28,375.22 = 5,587.54 : x
  2. Step 2: Convert to fraction form
    18,914.32/28,375.22 = 5,587.54/x
  3. Step 3: Cross multiply
    18,914.32x = 28,375.22 × 5,587.54
  4. Step 4: Simplify right side
    18,914.32x = 158,547,676.76
  5. Step 5: Solve for x
    x = 158,547,676.76/18,914.32
  6. Step 6: Final answer
    x = 8,382.41

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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.