Home / 28,251.59-42,378.80-10,722.78

Finding the Fourth Proportional to 28,251.59, 42,378.80 and 10,722.78

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Solution

The fourth proportional to 28,251.59, 42,378.80 and 10,722.78 is: 16,084.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.59 : 42,378.80 = 10,722.78 : x
  2. Step 2: Convert to fraction form
    28,251.59/42,378.80 = 10,722.78/x
  3. Step 3: Cross multiply
    28,251.59x = 42,378.80 × 10,722.78
  4. Step 4: Simplify right side
    28,251.59x = 454,418,495.45
  5. Step 5: Solve for x
    x = 454,418,495.45/28,251.59
  6. Step 6: Final answer
    x = 16,084.71

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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.