Home / 10,871.81-15,002.88-6,091.70

Finding the Fourth Proportional to 10,871.81, 15,002.88 and 6,091.70

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Solution

The fourth proportional to 10,871.81, 15,002.88 and 6,091.70 is: 8,406.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,871.81 : 15,002.88 = 6,091.70 : x
  2. Step 2: Convert to fraction form
    10,871.81/15,002.88 = 6,091.70/x
  3. Step 3: Cross multiply
    10,871.81x = 15,002.88 × 6,091.70
  4. Step 4: Simplify right side
    10,871.81x = 91,392,969.08
  5. Step 5: Solve for x
    x = 91,392,969.08/10,871.81
  6. Step 6: Final answer
    x = 8,406.42

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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.