Home / 11,308.31-15,605.87-8,470.68

Finding the Fourth Proportional to 11,308.31, 15,605.87 and 8,470.68

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Solution

The fourth proportional to 11,308.31, 15,605.87 and 8,470.68 is: 11,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,308.31 : 15,605.87 = 8,470.68 : x
  2. Step 2: Convert to fraction form
    11,308.31/15,605.87 = 8,470.68/x
  3. Step 3: Cross multiply
    11,308.31x = 15,605.87 × 8,470.68
  4. Step 4: Simplify right side
    11,308.31x = 132,192,330.89
  5. Step 5: Solve for x
    x = 132,192,330.89/11,308.31
  6. Step 6: Final answer
    x = 11,689.84

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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.