Home / 15,429.86-23,120.51-11,928.43

Finding the Fourth Proportional to 15,429.86, 23,120.51 and 11,928.43

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Solution

The fourth proportional to 15,429.86, 23,120.51 and 11,928.43 is: 17,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.86 : 23,120.51 = 11,928.43 : x
  2. Step 2: Convert to fraction form
    15,429.86/23,120.51 = 11,928.43/x
  3. Step 3: Cross multiply
    15,429.86x = 23,120.51 × 11,928.43
  4. Step 4: Simplify right side
    15,429.86x = 275,791,354.36
  5. Step 5: Solve for x
    x = 275,791,354.36/15,429.86
  6. Step 6: Final answer
    x = 17,873.87

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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.