Home / 21,913.38-32,856.90-8,570.48

Finding the Fourth Proportional to 21,913.38, 32,856.90 and 8,570.48

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Solution

The fourth proportional to 21,913.38, 32,856.90 and 8,570.48 is: 12,850.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.38 : 32,856.90 = 8,570.48 : x
  2. Step 2: Convert to fraction form
    21,913.38/32,856.90 = 8,570.48/x
  3. Step 3: Cross multiply
    21,913.38x = 32,856.90 × 8,570.48
  4. Step 4: Simplify right side
    21,913.38x = 281,599,404.31
  5. Step 5: Solve for x
    x = 281,599,404.31/21,913.38
  6. Step 6: Final answer
    x = 12,850.57

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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.