Home / 11,688.56-17,601.38-8,424.26

Finding the Fourth Proportional to 11,688.56, 17,601.38 and 8,424.26

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Solution

The fourth proportional to 11,688.56, 17,601.38 and 8,424.26 is: 12,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.56 : 17,601.38 = 8,424.26 : x
  2. Step 2: Convert to fraction form
    11,688.56/17,601.38 = 8,424.26/x
  3. Step 3: Cross multiply
    11,688.56x = 17,601.38 × 8,424.26
  4. Step 4: Simplify right side
    11,688.56x = 148,278,601.48
  5. Step 5: Solve for x
    x = 148,278,601.48/11,688.56
  6. Step 6: Final answer
    x = 12,685.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.