Home / 21,856.34-32,789.38-6,272.78

Finding the Fourth Proportional to 21,856.34, 32,789.38 and 6,272.78

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Solution

The fourth proportional to 21,856.34, 32,789.38 and 6,272.78 is: 9,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.34 : 32,789.38 = 6,272.78 : x
  2. Step 2: Convert to fraction form
    21,856.34/32,789.38 = 6,272.78/x
  3. Step 3: Cross multiply
    21,856.34x = 32,789.38 × 6,272.78
  4. Step 4: Simplify right side
    21,856.34x = 205,680,567.08
  5. Step 5: Solve for x
    x = 205,680,567.08/21,856.34
  6. Step 6: Final answer
    x = 9,410.57

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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.