Home / 36,180.80-54,280.50-13,988.40

Finding the Fourth Proportional to 36,180.80, 54,280.50 and 13,988.40

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Solution

The fourth proportional to 36,180.80, 54,280.50 and 13,988.40 is: 20,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,180.80 : 54,280.50 = 13,988.40 : x
  2. Step 2: Convert to fraction form
    36,180.80/54,280.50 = 13,988.40/x
  3. Step 3: Cross multiply
    36,180.80x = 54,280.50 × 13,988.40
  4. Step 4: Simplify right side
    36,180.80x = 759,297,346.20
  5. Step 5: Solve for x
    x = 759,297,346.20/36,180.80
  6. Step 6: Final answer
    x = 20,986.20

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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.