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Finding the Fourth Proportional to 11,564.34, 15,959.17 and 7,087.22

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Solution

The fourth proportional to 11,564.34, 15,959.17 and 7,087.22 is: 9,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,564.34 : 15,959.17 = 7,087.22 : x
  2. Step 2: Convert to fraction form
    11,564.34/15,959.17 = 7,087.22/x
  3. Step 3: Cross multiply
    11,564.34x = 15,959.17 × 7,087.22
  4. Step 4: Simplify right side
    11,564.34x = 113,106,215.85
  5. Step 5: Solve for x
    x = 113,106,215.85/11,564.34
  6. Step 6: Final answer
    x = 9,780.61

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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.