Home / 10,055.57-15,081.63-2,660.78

Finding the Fourth Proportional to 10,055.57, 15,081.63 and 2,660.78

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Solution

The fourth proportional to 10,055.57, 15,081.63 and 2,660.78 is: 3,990.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,055.57 : 15,081.63 = 2,660.78 : x
  2. Step 2: Convert to fraction form
    10,055.57/15,081.63 = 2,660.78/x
  3. Step 3: Cross multiply
    10,055.57x = 15,081.63 × 2,660.78
  4. Step 4: Simplify right side
    10,055.57x = 40,128,824.06
  5. Step 5: Solve for x
    x = 40,128,824.06/10,055.57
  6. Step 6: Final answer
    x = 3,990.71

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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.