Home / 28,489.03-42,720.55-11,839.14

Finding the Fourth Proportional to 28,489.03, 42,720.55 and 11,839.14

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Solution

The fourth proportional to 28,489.03, 42,720.55 and 11,839.14 is: 17,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.03 : 42,720.55 = 11,839.14 : x
  2. Step 2: Convert to fraction form
    28,489.03/42,720.55 = 11,839.14/x
  3. Step 3: Cross multiply
    28,489.03x = 42,720.55 × 11,839.14
  4. Step 4: Simplify right side
    28,489.03x = 505,774,679.13
  5. Step 5: Solve for x
    x = 505,774,679.13/28,489.03
  6. Step 6: Final answer
    x = 17,753.31

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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.