Home / 20,191.06-30,284.86-12,291.53

Finding the Fourth Proportional to 20,191.06, 30,284.86 and 12,291.53

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Solution

The fourth proportional to 20,191.06, 30,284.86 and 12,291.53 is: 18,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.06 : 30,284.86 = 12,291.53 : x
  2. Step 2: Convert to fraction form
    20,191.06/30,284.86 = 12,291.53/x
  3. Step 3: Cross multiply
    20,191.06x = 30,284.86 × 12,291.53
  4. Step 4: Simplify right side
    20,191.06x = 372,247,148.72
  5. Step 5: Solve for x
    x = 372,247,148.72/20,191.06
  6. Step 6: Final answer
    x = 18,436.23

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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.