Home / 10,971.06-15,135.23-6,991.26

Finding the Fourth Proportional to 10,971.06, 15,135.23 and 6,991.26

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Solution

The fourth proportional to 10,971.06, 15,135.23 and 6,991.26 is: 9,644.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971.06 : 15,135.23 = 6,991.26 : x
  2. Step 2: Convert to fraction form
    10,971.06/15,135.23 = 6,991.26/x
  3. Step 3: Cross multiply
    10,971.06x = 15,135.23 × 6,991.26
  4. Step 4: Simplify right side
    10,971.06x = 105,814,293.13
  5. Step 5: Solve for x
    x = 105,814,293.13/10,971.06
  6. Step 6: Final answer
    x = 9,644.86

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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.