Home / 12,421.12-18,631.41-5,843.66

Finding the Fourth Proportional to 12,421.12, 18,631.41 and 5,843.66

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Solution

The fourth proportional to 12,421.12, 18,631.41 and 5,843.66 is: 8,765.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.12 : 18,631.41 = 5,843.66 : x
  2. Step 2: Convert to fraction form
    12,421.12/18,631.41 = 5,843.66/x
  3. Step 3: Cross multiply
    12,421.12x = 18,631.41 × 5,843.66
  4. Step 4: Simplify right side
    12,421.12x = 108,875,625.36
  5. Step 5: Solve for x
    x = 108,875,625.36/12,421.12
  6. Step 6: Final answer
    x = 8,765.36

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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.