Home / 10,659.09-15,990.92-3,639.74

Finding the Fourth Proportional to 10,659.09, 15,990.92 and 3,639.74

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Solution

The fourth proportional to 10,659.09, 15,990.92 and 3,639.74 is: 5,460.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659.09 : 15,990.92 = 3,639.74 : x
  2. Step 2: Convert to fraction form
    10,659.09/15,990.92 = 3,639.74/x
  3. Step 3: Cross multiply
    10,659.09x = 15,990.92 × 3,639.74
  4. Step 4: Simplify right side
    10,659.09x = 58,202,706.66
  5. Step 5: Solve for x
    x = 58,202,706.66/10,659.09
  6. Step 6: Final answer
    x = 5,460.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.