Home / 10,938.46-15,138.39-10,676.38

Finding the Fourth Proportional to 10,938.46, 15,138.39 and 10,676.38

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Solution

The fourth proportional to 10,938.46, 15,138.39 and 10,676.38 is: 14,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.46 : 15,138.39 = 10,676.38 : x
  2. Step 2: Convert to fraction form
    10,938.46/15,138.39 = 10,676.38/x
  3. Step 3: Cross multiply
    10,938.46x = 15,138.39 × 10,676.38
  4. Step 4: Simplify right side
    10,938.46x = 161,623,204.23
  5. Step 5: Solve for x
    x = 161,623,204.23/10,938.46
  6. Step 6: Final answer
    x = 14,775.68

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1.5x scale

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.