Home / 13,480.25-18,600.56-7,813.89

Finding the Fourth Proportional to 13,480.25, 18,600.56 and 7,813.89

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Solution

The fourth proportional to 13,480.25, 18,600.56 and 7,813.89 is: 10,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.25 : 18,600.56 = 7,813.89 : x
  2. Step 2: Convert to fraction form
    13,480.25/18,600.56 = 7,813.89/x
  3. Step 3: Cross multiply
    13,480.25x = 18,600.56 × 7,813.89
  4. Step 4: Simplify right side
    13,480.25x = 145,342,735.18
  5. Step 5: Solve for x
    x = 145,342,735.18/13,480.25
  6. Step 6: Final answer
    x = 10,781.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.