Home / 10,119.85-13,971.90-6,938.44

Finding the Fourth Proportional to 10,119.85, 13,971.90 and 6,938.44

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Solution

The fourth proportional to 10,119.85, 13,971.90 and 6,938.44 is: 9,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.85 : 13,971.90 = 6,938.44 : x
  2. Step 2: Convert to fraction form
    10,119.85/13,971.90 = 6,938.44/x
  3. Step 3: Cross multiply
    10,119.85x = 13,971.90 × 6,938.44
  4. Step 4: Simplify right side
    10,119.85x = 96,943,189.84
  5. Step 5: Solve for x
    x = 96,943,189.84/10,119.85
  6. Step 6: Final answer
    x = 9,579.51

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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.