Home / 21,877.20-32,806.20-8,725.20

Finding the Fourth Proportional to 21,877.20, 32,806.20 and 8,725.20

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Solution

The fourth proportional to 21,877.20, 32,806.20 and 8,725.20 is: 13,083.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.20 : 32,806.20 = 8,725.20 : x
  2. Step 2: Convert to fraction form
    21,877.20/32,806.20 = 8,725.20/x
  3. Step 3: Cross multiply
    21,877.20x = 32,806.20 × 8,725.20
  4. Step 4: Simplify right side
    21,877.20x = 286,240,656.24
  5. Step 5: Solve for x
    x = 286,240,656.24/21,877.20
  6. Step 6: Final answer
    x = 13,083.97

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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.