Home / 28,690.47-43,033.28-9,965.70

Finding the Fourth Proportional to 28,690.47, 43,033.28 and 9,965.70

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Solution

The fourth proportional to 28,690.47, 43,033.28 and 9,965.70 is: 14,947.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.47 : 43,033.28 = 9,965.70 : x
  2. Step 2: Convert to fraction form
    28,690.47/43,033.28 = 9,965.70/x
  3. Step 3: Cross multiply
    28,690.47x = 43,033.28 × 9,965.70
  4. Step 4: Simplify right side
    28,690.47x = 428,856,708.67
  5. Step 5: Solve for x
    x = 428,856,708.67/28,690.47
  6. Step 6: Final answer
    x = 14,947.71

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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.