Home / 12,822.12-19,235.19-5,426.64

Finding the Fourth Proportional to 12,822.12, 19,235.19 and 5,426.64

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Solution

The fourth proportional to 12,822.12, 19,235.19 and 5,426.64 is: 8,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,822.12 : 19,235.19 = 5,426.64 : x
  2. Step 2: Convert to fraction form
    12,822.12/19,235.19 = 5,426.64/x
  3. Step 3: Cross multiply
    12,822.12x = 19,235.19 × 5,426.64
  4. Step 4: Simplify right side
    12,822.12x = 104,382,451.46
  5. Step 5: Solve for x
    x = 104,382,451.46/12,822.12
  6. Step 6: Final answer
    x = 8,140.81

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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.