Home / 20,105.50-30,160.41-9,017.14

Finding the Fourth Proportional to 20,105.50, 30,160.41 and 9,017.14

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Solution

The fourth proportional to 20,105.50, 30,160.41 and 9,017.14 is: 13,526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.50 : 30,160.41 = 9,017.14 : x
  2. Step 2: Convert to fraction form
    20,105.50/30,160.41 = 9,017.14/x
  3. Step 3: Cross multiply
    20,105.50x = 30,160.41 × 9,017.14
  4. Step 4: Simplify right side
    20,105.50x = 271,960,639.43
  5. Step 5: Solve for x
    x = 271,960,639.43/20,105.50
  6. Step 6: Final answer
    x = 13,526.68

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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.