Home / 28,454.68-42,684.30-7,677.88

Finding the Fourth Proportional to 28,454.68, 42,684.30 and 7,677.88

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Solution

The fourth proportional to 28,454.68, 42,684.30 and 7,677.88 is: 11,517.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.68 : 42,684.30 = 7,677.88 : x
  2. Step 2: Convert to fraction form
    28,454.68/42,684.30 = 7,677.88/x
  3. Step 3: Cross multiply
    28,454.68x = 42,684.30 × 7,677.88
  4. Step 4: Simplify right side
    28,454.68x = 327,724,933.28
  5. Step 5: Solve for x
    x = 327,724,933.28/28,454.68
  6. Step 6: Final answer
    x = 11,517.44

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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.