Home / 28,126.85-42,190.32-11,486.88

Finding the Fourth Proportional to 28,126.85, 42,190.32 and 11,486.88

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Solution

The fourth proportional to 28,126.85, 42,190.32 and 11,486.88 is: 17,230.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.85 : 42,190.32 = 11,486.88 : x
  2. Step 2: Convert to fraction form
    28,126.85/42,190.32 = 11,486.88/x
  3. Step 3: Cross multiply
    28,126.85x = 42,190.32 × 11,486.88
  4. Step 4: Simplify right side
    28,126.85x = 484,635,191.04
  5. Step 5: Solve for x
    x = 484,635,191.04/28,126.85
  6. Step 6: Final answer
    x = 17,230.34

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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.