Home / 10,878.71-16,291.34-5,314.11

Finding the Fourth Proportional to 10,878.71, 16,291.34 and 5,314.11

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Solution

The fourth proportional to 10,878.71, 16,291.34 and 5,314.11 is: 7,958.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.71 : 16,291.34 = 5,314.11 : x
  2. Step 2: Convert to fraction form
    10,878.71/16,291.34 = 5,314.11/x
  3. Step 3: Cross multiply
    10,878.71x = 16,291.34 × 5,314.11
  4. Step 4: Simplify right side
    10,878.71x = 86,573,986.09
  5. Step 5: Solve for x
    x = 86,573,986.09/10,878.71
  6. Step 6: Final answer
    x = 7,958.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.