Home / 40,480.36-60,720.69-12,400.30

Finding the Fourth Proportional to 40,480.36, 60,720.69 and 12,400.30

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Solution

The fourth proportional to 40,480.36, 60,720.69 and 12,400.30 is: 18,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,480.36 : 60,720.69 = 12,400.30 : x
  2. Step 2: Convert to fraction form
    40,480.36/60,720.69 = 12,400.30/x
  3. Step 3: Cross multiply
    40,480.36x = 60,720.69 × 12,400.30
  4. Step 4: Simplify right side
    40,480.36x = 752,954,772.21
  5. Step 5: Solve for x
    x = 752,954,772.21/40,480.36
  6. Step 6: Final answer
    x = 18,600.50

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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.