Home / 10,991.31-15,168.29-6,516.06

Finding the Fourth Proportional to 10,991.31, 15,168.29 and 6,516.06

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Solution

The fourth proportional to 10,991.31, 15,168.29 and 6,516.06 is: 8,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.31 : 15,168.29 = 6,516.06 : x
  2. Step 2: Convert to fraction form
    10,991.31/15,168.29 = 6,516.06/x
  3. Step 3: Cross multiply
    10,991.31x = 15,168.29 × 6,516.06
  4. Step 4: Simplify right side
    10,991.31x = 98,837,487.74
  5. Step 5: Solve for x
    x = 98,837,487.74/10,991.31
  6. Step 6: Final answer
    x = 8,992.33

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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.