Home / 18,872.40-28,301.31-8,341.86

Finding the Fourth Proportional to 18,872.40, 28,301.31 and 8,341.86

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Solution

The fourth proportional to 18,872.40, 28,301.31 and 8,341.86 is: 12,509.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.40 : 28,301.31 = 8,341.86 : x
  2. Step 2: Convert to fraction form
    18,872.40/28,301.31 = 8,341.86/x
  3. Step 3: Cross multiply
    18,872.40x = 28,301.31 × 8,341.86
  4. Step 4: Simplify right side
    18,872.40x = 236,085,565.84
  5. Step 5: Solve for x
    x = 236,085,565.84/18,872.40
  6. Step 6: Final answer
    x = 12,509.57

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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.