Home / 28,081.16-42,121.62-11,437.48

Finding the Fourth Proportional to 28,081.16, 42,121.62 and 11,437.48

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Solution

The fourth proportional to 28,081.16, 42,121.62 and 11,437.48 is: 17,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.16 : 42,121.62 = 11,437.48 : x
  2. Step 2: Convert to fraction form
    28,081.16/42,121.62 = 11,437.48/x
  3. Step 3: Cross multiply
    28,081.16x = 42,121.62 × 11,437.48
  4. Step 4: Simplify right side
    28,081.16x = 481,765,186.32
  5. Step 5: Solve for x
    x = 481,765,186.32/28,081.16
  6. Step 6: Final answer
    x = 17,156.17

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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.