Home / 12,121.11-16,726.96-6,815.93

Finding the Fourth Proportional to 12,121.11, 16,726.96 and 6,815.93

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Solution

The fourth proportional to 12,121.11, 16,726.96 and 6,815.93 is: 9,405.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.11 : 16,726.96 = 6,815.93 : x
  2. Step 2: Convert to fraction form
    12,121.11/16,726.96 = 6,815.93/x
  3. Step 3: Cross multiply
    12,121.11x = 16,726.96 × 6,815.93
  4. Step 4: Simplify right side
    12,121.11x = 114,009,769.11
  5. Step 5: Solve for x
    x = 114,009,769.11/12,121.11
  6. Step 6: Final answer
    x = 9,405.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.