Home / 19,071.38-28,611.12-5,744.78

Finding the Fourth Proportional to 19,071.38, 28,611.12 and 5,744.78

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Solution

The fourth proportional to 19,071.38, 28,611.12 and 5,744.78 is: 8,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,071.38 : 28,611.12 = 5,744.78 : x
  2. Step 2: Convert to fraction form
    19,071.38/28,611.12 = 5,744.78/x
  3. Step 3: Cross multiply
    19,071.38x = 28,611.12 × 5,744.78
  4. Step 4: Simplify right side
    19,071.38x = 164,364,589.95
  5. Step 5: Solve for x
    x = 164,364,589.95/19,071.38
  6. Step 6: Final answer
    x = 8,618.39

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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.