Home / 13,872.24-19,143.72-8,565.84

Finding the Fourth Proportional to 13,872.24, 19,143.72 and 8,565.84

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Solution

The fourth proportional to 13,872.24, 19,143.72 and 8,565.84 is: 11,820.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.24 : 19,143.72 = 8,565.84 : x
  2. Step 2: Convert to fraction form
    13,872.24/19,143.72 = 8,565.84/x
  3. Step 3: Cross multiply
    13,872.24x = 19,143.72 × 8,565.84
  4. Step 4: Simplify right side
    13,872.24x = 163,982,042.52
  5. Step 5: Solve for x
    x = 163,982,042.52/13,872.24
  6. Step 6: Final answer
    x = 11,820.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.