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Finding the Fourth Proportional to 28,483.83, 42,731.44 and 8,761.64

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Solution

The fourth proportional to 28,483.83, 42,731.44 and 8,761.64 is: 13,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.83 : 42,731.44 = 8,761.64 : x
  2. Step 2: Convert to fraction form
    28,483.83/42,731.44 = 8,761.64/x
  3. Step 3: Cross multiply
    28,483.83x = 42,731.44 × 8,761.64
  4. Step 4: Simplify right side
    28,483.83x = 374,397,258.40
  5. Step 5: Solve for x
    x = 374,397,258.40/28,483.83
  6. Step 6: Final answer
    x = 13,144.20

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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.