Home / 20,891.80-31,350.46-9,048.74

Finding the Fourth Proportional to 20,891.80, 31,350.46 and 9,048.74

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Solution

The fourth proportional to 20,891.80, 31,350.46 and 9,048.74 is: 13,578.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891.80 : 31,350.46 = 9,048.74 : x
  2. Step 2: Convert to fraction form
    20,891.80/31,350.46 = 9,048.74/x
  3. Step 3: Cross multiply
    20,891.80x = 31,350.46 × 9,048.74
  4. Step 4: Simplify right side
    20,891.80x = 283,682,161.42
  5. Step 5: Solve for x
    x = 283,682,161.42/20,891.80
  6. Step 6: Final answer
    x = 13,578.64

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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.