Home / 20,107.40-30,160.91-5,114.55

Finding the Fourth Proportional to 20,107.40, 30,160.91 and 5,114.55

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Solution

The fourth proportional to 20,107.40, 30,160.91 and 5,114.55 is: 7,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.40 : 30,160.91 = 5,114.55 : x
  2. Step 2: Convert to fraction form
    20,107.40/30,160.91 = 5,114.55/x
  3. Step 3: Cross multiply
    20,107.40x = 30,160.91 × 5,114.55
  4. Step 4: Simplify right side
    20,107.40x = 154,259,482.24
  5. Step 5: Solve for x
    x = 154,259,482.24/20,107.40
  6. Step 6: Final answer
    x = 7,671.78

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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.