Home / 20,191.71-27,860.33-12,232.39

Finding the Fourth Proportional to 20,191.71, 27,860.33 and 12,232.39

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Solution

The fourth proportional to 20,191.71, 27,860.33 and 12,232.39 is: 16,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.71 : 27,860.33 = 12,232.39 : x
  2. Step 2: Convert to fraction form
    20,191.71/27,860.33 = 12,232.39/x
  3. Step 3: Cross multiply
    20,191.71x = 27,860.33 × 12,232.39
  4. Step 4: Simplify right side
    20,191.71x = 340,798,479.21
  5. Step 5: Solve for x
    x = 340,798,479.21/20,191.71
  6. Step 6: Final answer
    x = 16,878.14

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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.