Home / 28,115.16-42,158.97-9,388.77

Finding the Fourth Proportional to 28,115.16, 42,158.97 and 9,388.77

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Solution

The fourth proportional to 28,115.16, 42,158.97 and 9,388.77 is: 14,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.16 : 42,158.97 = 9,388.77 : x
  2. Step 2: Convert to fraction form
    28,115.16/42,158.97 = 9,388.77/x
  3. Step 3: Cross multiply
    28,115.16x = 42,158.97 × 9,388.77
  4. Step 4: Simplify right side
    28,115.16x = 395,820,872.77
  5. Step 5: Solve for x
    x = 395,820,872.77/28,115.16
  6. Step 6: Final answer
    x = 14,078.56

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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.