Home / 13,600.36-20,403.78-5,280.58

Finding the Fourth Proportional to 13,600.36, 20,403.78 and 5,280.58

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Solution

The fourth proportional to 13,600.36, 20,403.78 and 5,280.58 is: 7,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.36 : 20,403.78 = 5,280.58 : x
  2. Step 2: Convert to fraction form
    13,600.36/20,403.78 = 5,280.58/x
  3. Step 3: Cross multiply
    13,600.36x = 20,403.78 × 5,280.58
  4. Step 4: Simplify right side
    13,600.36x = 107,743,792.59
  5. Step 5: Solve for x
    x = 107,743,792.59/13,600.36
  6. Step 6: Final answer
    x = 7,922.13

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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.