Home / 28,220.44-42,320.85-11,575.75

Finding the Fourth Proportional to 28,220.44, 42,320.85 and 11,575.75

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Solution

The fourth proportional to 28,220.44, 42,320.85 and 11,575.75 is: 17,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.44 : 42,320.85 = 11,575.75 : x
  2. Step 2: Convert to fraction form
    28,220.44/42,320.85 = 11,575.75/x
  3. Step 3: Cross multiply
    28,220.44x = 42,320.85 × 11,575.75
  4. Step 4: Simplify right side
    28,220.44x = 489,895,579.39
  5. Step 5: Solve for x
    x = 489,895,579.39/28,220.44
  6. Step 6: Final answer
    x = 17,359.60

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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.