Home / 11,239.29-15,512.72-8,415.36

Finding the Fourth Proportional to 11,239.29, 15,512.72 and 8,415.36

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Solution

The fourth proportional to 11,239.29, 15,512.72 and 8,415.36 is: 11,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.29 : 15,512.72 = 8,415.36 : x
  2. Step 2: Convert to fraction form
    11,239.29/15,512.72 = 8,415.36/x
  3. Step 3: Cross multiply
    11,239.29x = 15,512.72 × 8,415.36
  4. Step 4: Simplify right side
    11,239.29x = 130,545,081.30
  5. Step 5: Solve for x
    x = 130,545,081.30/11,239.29
  6. Step 6: Final answer
    x = 11,615.06

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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.