Home / 10,878.80-15,015.45-6,684.62

Finding the Fourth Proportional to 10,878.80, 15,015.45 and 6,684.62

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Solution

The fourth proportional to 10,878.80, 15,015.45 and 6,684.62 is: 9,226.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.80 : 15,015.45 = 6,684.62 : x
  2. Step 2: Convert to fraction form
    10,878.80/15,015.45 = 6,684.62/x
  3. Step 3: Cross multiply
    10,878.80x = 15,015.45 × 6,684.62
  4. Step 4: Simplify right side
    10,878.80x = 100,372,527.37
  5. Step 5: Solve for x
    x = 100,372,527.37/10,878.80
  6. Step 6: Final answer
    x = 9,226.44

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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.