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Finding the Fourth Proportional to 15,043.57, 20,759.30 and 8,993.93

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Solution

The fourth proportional to 15,043.57, 20,759.30 and 8,993.93 is: 12,411.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.57 : 20,759.30 = 8,993.93 : x
  2. Step 2: Convert to fraction form
    15,043.57/20,759.30 = 8,993.93/x
  3. Step 3: Cross multiply
    15,043.57x = 20,759.30 × 8,993.93
  4. Step 4: Simplify right side
    15,043.57x = 186,707,691.05
  5. Step 5: Solve for x
    x = 186,707,691.05/15,043.57
  6. Step 6: Final answer
    x = 12,411.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.