Home / 28,180.80-42,255.37-19,306.15

Finding the Fourth Proportional to 28,180.80, 42,255.37 and 19,306.15

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Solution

The fourth proportional to 28,180.80, 42,255.37 and 19,306.15 is: 28,948.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.80 : 42,255.37 = 19,306.15 : x
  2. Step 2: Convert to fraction form
    28,180.80/42,255.37 = 19,306.15/x
  3. Step 3: Cross multiply
    28,180.80x = 42,255.37 × 19,306.15
  4. Step 4: Simplify right side
    28,180.80x = 815,788,511.53
  5. Step 5: Solve for x
    x = 815,788,511.53/28,180.80
  6. Step 6: Final answer
    x = 28,948.38

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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.