Home / 10,949.12-15,111.48-6,971.96

Finding the Fourth Proportional to 10,949.12, 15,111.48 and 6,971.96

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Solution

The fourth proportional to 10,949.12, 15,111.48 and 6,971.96 is: 9,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.12 : 15,111.48 = 6,971.96 : x
  2. Step 2: Convert to fraction form
    10,949.12/15,111.48 = 6,971.96/x
  3. Step 3: Cross multiply
    10,949.12x = 15,111.48 × 6,971.96
  4. Step 4: Simplify right side
    10,949.12x = 105,356,634.10
  5. Step 5: Solve for x
    x = 105,356,634.10/10,949.12
  6. Step 6: Final answer
    x = 9,622.38

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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.