Home / 11,242.29-15,516.87-8,418.36

Finding the Fourth Proportional to 11,242.29, 15,516.87 and 8,418.36

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Solution

The fourth proportional to 11,242.29, 15,516.87 and 8,418.36 is: 11,619.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,242.29 : 15,516.87 = 8,418.36 : x
  2. Step 2: Convert to fraction form
    11,242.29/15,516.87 = 8,418.36/x
  3. Step 3: Cross multiply
    11,242.29x = 15,516.87 × 8,418.36
  4. Step 4: Simplify right side
    11,242.29x = 130,626,597.73
  5. Step 5: Solve for x
    x = 130,626,597.73/11,242.29
  6. Step 6: Final answer
    x = 11,619.22

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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.