Home / 10,930.18-16,397.70-3,138.40

Finding the Fourth Proportional to 10,930.18, 16,397.70 and 3,138.40

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Solution

The fourth proportional to 10,930.18, 16,397.70 and 3,138.40 is: 4,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,930.18 : 16,397.70 = 3,138.40 : x
  2. Step 2: Convert to fraction form
    10,930.18/16,397.70 = 3,138.40/x
  3. Step 3: Cross multiply
    10,930.18x = 16,397.70 × 3,138.40
  4. Step 4: Simplify right side
    10,930.18x = 51,462,541.68
  5. Step 5: Solve for x
    x = 51,462,541.68/10,930.18
  6. Step 6: Final answer
    x = 4,708.30

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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.