Home / 20,168.70-27,830.67-11,214.75

Finding the Fourth Proportional to 20,168.70, 27,830.67 and 11,214.75

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Solution

The fourth proportional to 20,168.70, 27,830.67 and 11,214.75 is: 15,475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.70 : 27,830.67 = 11,214.75 : x
  2. Step 2: Convert to fraction form
    20,168.70/27,830.67 = 11,214.75/x
  3. Step 3: Cross multiply
    20,168.70x = 27,830.67 × 11,214.75
  4. Step 4: Simplify right side
    20,168.70x = 312,114,006.38
  5. Step 5: Solve for x
    x = 312,114,006.38/20,168.70
  6. Step 6: Final answer
    x = 15,475.17

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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.