Home / 12,387.77-17,095.41-6,722.75

Finding the Fourth Proportional to 12,387.77, 17,095.41 and 6,722.75

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Solution

The fourth proportional to 12,387.77, 17,095.41 and 6,722.75 is: 9,277.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.77 : 17,095.41 = 6,722.75 : x
  2. Step 2: Convert to fraction form
    12,387.77/17,095.41 = 6,722.75/x
  3. Step 3: Cross multiply
    12,387.77x = 17,095.41 × 6,722.75
  4. Step 4: Simplify right side
    12,387.77x = 114,928,082.10
  5. Step 5: Solve for x
    x = 114,928,082.10/12,387.77
  6. Step 6: Final answer
    x = 9,277.55

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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.