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Finding the Fourth Proportional to 20,574.22, 30,854.94 and 7,424.88

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Solution

The fourth proportional to 20,574.22, 30,854.94 and 7,424.88 is: 11,135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.22 : 30,854.94 = 7,424.88 : x
  2. Step 2: Convert to fraction form
    20,574.22/30,854.94 = 7,424.88/x
  3. Step 3: Cross multiply
    20,574.22x = 30,854.94 × 7,424.88
  4. Step 4: Simplify right side
    20,574.22x = 229,094,226.91
  5. Step 5: Solve for x
    x = 229,094,226.91/20,574.22
  6. Step 6: Final answer
    x = 11,135.01

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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.