Home / 20,191.57-30,287.35-5,400.10

Finding the Fourth Proportional to 20,191.57, 30,287.35 and 5,400.10

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Solution

The fourth proportional to 20,191.57, 30,287.35 and 5,400.10 is: 8,100.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.57 : 30,287.35 = 5,400.10 : x
  2. Step 2: Convert to fraction form
    20,191.57/30,287.35 = 5,400.10/x
  3. Step 3: Cross multiply
    20,191.57x = 30,287.35 × 5,400.10
  4. Step 4: Simplify right side
    20,191.57x = 163,554,729.59
  5. Step 5: Solve for x
    x = 163,554,729.59/20,191.57
  6. Step 6: Final answer
    x = 8,100.15

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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.