Home / 20,225.88-27,903.69-12,265.20

Finding the Fourth Proportional to 20,225.88, 27,903.69 and 12,265.20

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Solution

The fourth proportional to 20,225.88, 27,903.69 and 12,265.20 is: 16,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.88 : 27,903.69 = 12,265.20 : x
  2. Step 2: Convert to fraction form
    20,225.88/27,903.69 = 12,265.20/x
  3. Step 3: Cross multiply
    20,225.88x = 27,903.69 × 12,265.20
  4. Step 4: Simplify right side
    20,225.88x = 342,244,338.59
  5. Step 5: Solve for x
    x = 342,244,338.59/20,225.88
  6. Step 6: Final answer
    x = 16,921.11

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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.