Home / 15,821.76-23,708-14,169.28

Finding the Fourth Proportional to 15,821.76, 23,708 and 14,169.28

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Solution

The fourth proportional to 15,821.76, 23,708 and 14,169.28 is: 21,231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.76 : 23,708 = 14,169.28 : x
  2. Step 2: Convert to fraction form
    15,821.76/23,708 = 14,169.28/x
  3. Step 3: Cross multiply
    15,821.76x = 23,708 × 14,169.28
  4. Step 4: Simplify right side
    15,821.76x = 335,925,290.24
  5. Step 5: Solve for x
    x = 335,925,290.24/15,821.76
  6. Step 6: Final answer
    x = 21,231.85

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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.