Home / 28,255.15-42,396.49-11,620.18

Finding the Fourth Proportional to 28,255.15, 42,396.49 and 11,620.18

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Solution

The fourth proportional to 28,255.15, 42,396.49 and 11,620.18 is: 17,435.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,255.15 : 42,396.49 = 11,620.18 : x
  2. Step 2: Convert to fraction form
    28,255.15/42,396.49 = 11,620.18/x
  3. Step 3: Cross multiply
    28,255.15x = 42,396.49 × 11,620.18
  4. Step 4: Simplify right side
    28,255.15x = 492,654,845.17
  5. Step 5: Solve for x
    x = 492,654,845.17/28,255.15
  6. Step 6: Final answer
    x = 17,435.93

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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.