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Finding the Fourth Proportional to 28,483.71, 42,730.42 and 8,761.83

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Solution

The fourth proportional to 28,483.71, 42,730.42 and 8,761.83 is: 13,144.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.71 : 42,730.42 = 8,761.83 : x
  2. Step 2: Convert to fraction form
    28,483.71/42,730.42 = 8,761.83/x
  3. Step 3: Cross multiply
    28,483.71x = 42,730.42 × 8,761.83
  4. Step 4: Simplify right side
    28,483.71x = 374,396,675.87
  5. Step 5: Solve for x
    x = 374,396,675.87/28,483.71
  6. Step 6: Final answer
    x = 13,144.24

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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.