Home / 20,133.69-30,169.74-8,440.53

Finding the Fourth Proportional to 20,133.69, 30,169.74 and 8,440.53

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Solution

The fourth proportional to 20,133.69, 30,169.74 and 8,440.53 is: 12,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.69 : 30,169.74 = 8,440.53 : x
  2. Step 2: Convert to fraction form
    20,133.69/30,169.74 = 8,440.53/x
  3. Step 3: Cross multiply
    20,133.69x = 30,169.74 × 8,440.53
  4. Step 4: Simplify right side
    20,133.69x = 254,648,595.56
  5. Step 5: Solve for x
    x = 254,648,595.56/20,133.69
  6. Step 6: Final answer
    x = 12,647.88

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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.