Home / 21,198.81-31,798.84-5,616.44

Finding the Fourth Proportional to 21,198.81, 31,798.84 and 5,616.44

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Solution

The fourth proportional to 21,198.81, 31,798.84 and 5,616.44 is: 8,424.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.81 : 31,798.84 = 5,616.44 : x
  2. Step 2: Convert to fraction form
    21,198.81/31,798.84 = 5,616.44/x
  3. Step 3: Cross multiply
    21,198.81x = 31,798.84 × 5,616.44
  4. Step 4: Simplify right side
    21,198.81x = 178,596,276.93
  5. Step 5: Solve for x
    x = 178,596,276.93/21,198.81
  6. Step 6: Final answer
    x = 8,424.83

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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.