Home / 10,991.74-15,168.62-5,955.96

Finding the Fourth Proportional to 10,991.74, 15,168.62 and 5,955.96

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Solution

The fourth proportional to 10,991.74, 15,168.62 and 5,955.96 is: 8,219.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.74 : 15,168.62 = 5,955.96 : x
  2. Step 2: Convert to fraction form
    10,991.74/15,168.62 = 5,955.96/x
  3. Step 3: Cross multiply
    10,991.74x = 15,168.62 × 5,955.96
  4. Step 4: Simplify right side
    10,991.74x = 90,343,693.98
  5. Step 5: Solve for x
    x = 90,343,693.98/10,991.74
  6. Step 6: Final answer
    x = 8,219.23

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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.