Home / 20,470.72-30,706.13-5,680.43

Finding the Fourth Proportional to 20,470.72, 30,706.13 and 5,680.43

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Solution

The fourth proportional to 20,470.72, 30,706.13 and 5,680.43 is: 8,520.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.72 : 30,706.13 = 5,680.43 : x
  2. Step 2: Convert to fraction form
    20,470.72/30,706.13 = 5,680.43/x
  3. Step 3: Cross multiply
    20,470.72x = 30,706.13 × 5,680.43
  4. Step 4: Simplify right side
    20,470.72x = 174,424,022.04
  5. Step 5: Solve for x
    x = 174,424,022.04/20,470.72
  6. Step 6: Final answer
    x = 8,520.66

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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.