Home / 11,307.31-15,604.49-8,469.68

Finding the Fourth Proportional to 11,307.31, 15,604.49 and 8,469.68

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Solution

The fourth proportional to 11,307.31, 15,604.49 and 8,469.68 is: 11,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,307.31 : 15,604.49 = 8,469.68 : x
  2. Step 2: Convert to fraction form
    11,307.31/15,604.49 = 8,469.68/x
  3. Step 3: Cross multiply
    11,307.31x = 15,604.49 × 8,469.68
  4. Step 4: Simplify right side
    11,307.31x = 132,164,980.01
  5. Step 5: Solve for x
    x = 132,164,980.01/11,307.31
  6. Step 6: Final answer
    x = 11,688.46

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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.