Home / 10,938.80-16,410.36-3,147.68

Finding the Fourth Proportional to 10,938.80, 16,410.36 and 3,147.68

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Solution

The fourth proportional to 10,938.80, 16,410.36 and 3,147.68 is: 4,722.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.80 : 16,410.36 = 3,147.68 : x
  2. Step 2: Convert to fraction form
    10,938.80/16,410.36 = 3,147.68/x
  3. Step 3: Cross multiply
    10,938.80x = 16,410.36 × 3,147.68
  4. Step 4: Simplify right side
    10,938.80x = 51,654,561.96
  5. Step 5: Solve for x
    x = 51,654,561.96/10,938.80
  6. Step 6: Final answer
    x = 4,722.14

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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.