Home / 22,328.32-30,812.08-13,380.80

Finding the Fourth Proportional to 22,328.32, 30,812.08 and 13,380.80

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Solution

The fourth proportional to 22,328.32, 30,812.08 and 13,380.80 is: 18,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,328.32 : 30,812.08 = 13,380.80 : x
  2. Step 2: Convert to fraction form
    22,328.32/30,812.08 = 13,380.80/x
  3. Step 3: Cross multiply
    22,328.32x = 30,812.08 × 13,380.80
  4. Step 4: Simplify right side
    22,328.32x = 412,290,280.06
  5. Step 5: Solve for x
    x = 412,290,280.06/22,328.32
  6. Step 6: Final answer
    x = 18,464.90

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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.