Home / 13,105.60-19,648.80-5,310.40

Finding the Fourth Proportional to 13,105.60, 19,648.80 and 5,310.40

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Solution

The fourth proportional to 13,105.60, 19,648.80 and 5,310.40 is: 7,961.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.60 : 19,648.80 = 5,310.40 : x
  2. Step 2: Convert to fraction form
    13,105.60/19,648.80 = 5,310.40/x
  3. Step 3: Cross multiply
    13,105.60x = 19,648.80 × 5,310.40
  4. Step 4: Simplify right side
    13,105.60x = 104,342,987.52
  5. Step 5: Solve for x
    x = 104,342,987.52/13,105.60
  6. Step 6: Final answer
    x = 7,961.71

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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.