Home / 10,506.14-15,742.78-8,939.70

Finding the Fourth Proportional to 10,506.14, 15,742.78 and 8,939.70

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Solution

The fourth proportional to 10,506.14, 15,742.78 and 8,939.70 is: 13,395.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,506.14 : 15,742.78 = 8,939.70 : x
  2. Step 2: Convert to fraction form
    10,506.14/15,742.78 = 8,939.70/x
  3. Step 3: Cross multiply
    10,506.14x = 15,742.78 × 8,939.70
  4. Step 4: Simplify right side
    10,506.14x = 140,735,730.37
  5. Step 5: Solve for x
    x = 140,735,730.37/10,506.14
  6. Step 6: Final answer
    x = 13,395.57

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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.