Home / 18,761.94-28,113.75-7,068.78

Finding the Fourth Proportional to 18,761.94, 28,113.75 and 7,068.78

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Solution

The fourth proportional to 18,761.94, 28,113.75 and 7,068.78 is: 10,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.94 : 28,113.75 = 7,068.78 : x
  2. Step 2: Convert to fraction form
    18,761.94/28,113.75 = 7,068.78/x
  3. Step 3: Cross multiply
    18,761.94x = 28,113.75 × 7,068.78
  4. Step 4: Simplify right side
    18,761.94x = 198,729,913.73
  5. Step 5: Solve for x
    x = 198,729,913.73/18,761.94
  6. Step 6: Final answer
    x = 10,592.18

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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.