Home / 10,889.28-15,034.68-6,858

Finding the Fourth Proportional to 10,889.28, 15,034.68 and 6,858

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Solution

The fourth proportional to 10,889.28, 15,034.68 and 6,858 is: 9,468.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.28 : 15,034.68 = 6,858 : x
  2. Step 2: Convert to fraction form
    10,889.28/15,034.68 = 6,858/x
  3. Step 3: Cross multiply
    10,889.28x = 15,034.68 × 6,858
  4. Step 4: Simplify right side
    10,889.28x = 103,107,835.44
  5. Step 5: Solve for x
    x = 103,107,835.44/10,889.28
  6. Step 6: Final answer
    x = 9,468.75

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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.