Home / 28,475.35-42,721.32-11,832.28

Finding the Fourth Proportional to 28,475.35, 42,721.32 and 11,832.28

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Solution

The fourth proportional to 28,475.35, 42,721.32 and 11,832.28 is: 17,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.35 : 42,721.32 = 11,832.28 : x
  2. Step 2: Convert to fraction form
    28,475.35/42,721.32 = 11,832.28/x
  3. Step 3: Cross multiply
    28,475.35x = 42,721.32 × 11,832.28
  4. Step 4: Simplify right side
    28,475.35x = 505,490,557.78
  5. Step 5: Solve for x
    x = 505,490,557.78/28,475.35
  6. Step 6: Final answer
    x = 17,751.87

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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.