Home / 15,159.14-20,919.83-8,786.17

Finding the Fourth Proportional to 15,159.14, 20,919.83 and 8,786.17

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Solution

The fourth proportional to 15,159.14, 20,919.83 and 8,786.17 is: 12,125.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,159.14 : 20,919.83 = 8,786.17 : x
  2. Step 2: Convert to fraction form
    15,159.14/20,919.83 = 8,786.17/x
  3. Step 3: Cross multiply
    15,159.14x = 20,919.83 × 8,786.17
  4. Step 4: Simplify right side
    15,159.14x = 183,805,297.94
  5. Step 5: Solve for x
    x = 183,805,297.94/15,159.14
  6. Step 6: Final answer
    x = 12,125.05

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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.