Home / 22,679.78-34,015.56-8,445.60

Finding the Fourth Proportional to 22,679.78, 34,015.56 and 8,445.60

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Solution

The fourth proportional to 22,679.78, 34,015.56 and 8,445.60 is: 12,666.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,679.78 : 34,015.56 = 8,445.60 : x
  2. Step 2: Convert to fraction form
    22,679.78/34,015.56 = 8,445.60/x
  3. Step 3: Cross multiply
    22,679.78x = 34,015.56 × 8,445.60
  4. Step 4: Simplify right side
    22,679.78x = 287,281,813.54
  5. Step 5: Solve for x
    x = 287,281,813.54/22,679.78
  6. Step 6: Final answer
    x = 12,666.87

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1.5x scale

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.