Home / 11,389.76-15,717.42-6,609.46

Finding the Fourth Proportional to 11,389.76, 15,717.42 and 6,609.46

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Solution

The fourth proportional to 11,389.76, 15,717.42 and 6,609.46 is: 9,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.76 : 15,717.42 = 6,609.46 : x
  2. Step 2: Convert to fraction form
    11,389.76/15,717.42 = 6,609.46/x
  3. Step 3: Cross multiply
    11,389.76x = 15,717.42 × 6,609.46
  4. Step 4: Simplify right side
    11,389.76x = 103,883,586.18
  5. Step 5: Solve for x
    x = 103,883,586.18/11,389.76
  6. Step 6: Final answer
    x = 9,120.78

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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.