Home / 11,320.87-15,622.50-6,786.11

Finding the Fourth Proportional to 11,320.87, 15,622.50 and 6,786.11

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Solution

The fourth proportional to 11,320.87, 15,622.50 and 6,786.11 is: 9,364.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.87 : 15,622.50 = 6,786.11 : x
  2. Step 2: Convert to fraction form
    11,320.87/15,622.50 = 6,786.11/x
  3. Step 3: Cross multiply
    11,320.87x = 15,622.50 × 6,786.11
  4. Step 4: Simplify right side
    11,320.87x = 106,016,021.32
  5. Step 5: Solve for x
    x = 106,016,021.32/11,320.87
  6. Step 6: Final answer
    x = 9,364.65

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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.