Home / 12,961.60-19,442.40-5,564.80

Finding the Fourth Proportional to 12,961.60, 19,442.40 and 5,564.80

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Solution

The fourth proportional to 12,961.60, 19,442.40 and 5,564.80 is: 8,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.60 : 19,442.40 = 5,564.80 : x
  2. Step 2: Convert to fraction form
    12,961.60/19,442.40 = 5,564.80/x
  3. Step 3: Cross multiply
    12,961.60x = 19,442.40 × 5,564.80
  4. Step 4: Simplify right side
    12,961.60x = 108,193,067.52
  5. Step 5: Solve for x
    x = 108,193,067.52/12,961.60
  6. Step 6: Final answer
    x = 8,347.20

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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.