Home / 20,106.19-30,149.70-9,012.97

Finding the Fourth Proportional to 20,106.19, 30,149.70 and 9,012.97

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Solution

The fourth proportional to 20,106.19, 30,149.70 and 9,012.97 is: 13,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.19 : 30,149.70 = 9,012.97 : x
  2. Step 2: Convert to fraction form
    20,106.19/30,149.70 = 9,012.97/x
  3. Step 3: Cross multiply
    20,106.19x = 30,149.70 × 9,012.97
  4. Step 4: Simplify right side
    20,106.19x = 271,738,341.61
  5. Step 5: Solve for x
    x = 271,738,341.61/20,106.19
  6. Step 6: Final answer
    x = 13,515.16

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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.