Home / 20,110.70-30,169.65-8,425.10

Finding the Fourth Proportional to 20,110.70, 30,169.65 and 8,425.10

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Solution

The fourth proportional to 20,110.70, 30,169.65 and 8,425.10 is: 12,639.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.70 : 30,169.65 = 8,425.10 : x
  2. Step 2: Convert to fraction form
    20,110.70/30,169.65 = 8,425.10/x
  3. Step 3: Cross multiply
    20,110.70x = 30,169.65 × 8,425.10
  4. Step 4: Simplify right side
    20,110.70x = 254,182,318.22
  5. Step 5: Solve for x
    x = 254,182,318.22/20,110.70
  6. Step 6: Final answer
    x = 12,639.16

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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.