Home / 15,438.72-23,209.92-12,017.28

Finding the Fourth Proportional to 15,438.72, 23,209.92 and 12,017.28

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Solution

The fourth proportional to 15,438.72, 23,209.92 and 12,017.28 is: 18,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.72 : 23,209.92 = 12,017.28 : x
  2. Step 2: Convert to fraction form
    15,438.72/23,209.92 = 12,017.28/x
  3. Step 3: Cross multiply
    15,438.72x = 23,209.92 × 12,017.28
  4. Step 4: Simplify right side
    15,438.72x = 278,920,107.42
  5. Step 5: Solve for x
    x = 278,920,107.42/15,438.72
  6. Step 6: Final answer
    x = 18,066.27

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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.