Home / 10,513.13-15,774.21-3,938.49

Finding the Fourth Proportional to 10,513.13, 15,774.21 and 3,938.49

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Solution

The fourth proportional to 10,513.13, 15,774.21 and 3,938.49 is: 5,909.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.13 : 15,774.21 = 3,938.49 : x
  2. Step 2: Convert to fraction form
    10,513.13/15,774.21 = 3,938.49/x
  3. Step 3: Cross multiply
    10,513.13x = 15,774.21 × 3,938.49
  4. Step 4: Simplify right side
    10,513.13x = 62,126,568.34
  5. Step 5: Solve for x
    x = 62,126,568.34/10,513.13
  6. Step 6: Final answer
    x = 5,909.43

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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.