Home / 28,077.85-42,080.36-11,418.49

Finding the Fourth Proportional to 28,077.85, 42,080.36 and 11,418.49

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Solution

The fourth proportional to 28,077.85, 42,080.36 and 11,418.49 is: 17,112.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.85 : 42,080.36 = 11,418.49 : x
  2. Step 2: Convert to fraction form
    28,077.85/42,080.36 = 11,418.49/x
  3. Step 3: Cross multiply
    28,077.85x = 42,080.36 × 11,418.49
  4. Step 4: Simplify right side
    28,077.85x = 480,494,112.76
  5. Step 5: Solve for x
    x = 480,494,112.76/28,077.85
  6. Step 6: Final answer
    x = 17,112.92

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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.