Home / 12,121.04-16,726.72-6,815.76

Finding the Fourth Proportional to 12,121.04, 16,726.72 and 6,815.76

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Solution

The fourth proportional to 12,121.04, 16,726.72 and 6,815.76 is: 9,405.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.04 : 16,726.72 = 6,815.76 : x
  2. Step 2: Convert to fraction form
    12,121.04/16,726.72 = 6,815.76/x
  3. Step 3: Cross multiply
    12,121.04x = 16,726.72 × 6,815.76
  4. Step 4: Simplify right side
    12,121.04x = 114,005,309.11
  5. Step 5: Solve for x
    x = 114,005,309.11/12,121.04
  6. Step 6: Final answer
    x = 9,405.57

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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.