Home / 18,742.15-25,865.13-10,785.57

Finding the Fourth Proportional to 18,742.15, 25,865.13 and 10,785.57

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Solution

The fourth proportional to 18,742.15, 25,865.13 and 10,785.57 is: 14,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.15 : 25,865.13 = 10,785.57 : x
  2. Step 2: Convert to fraction form
    18,742.15/25,865.13 = 10,785.57/x
  3. Step 3: Cross multiply
    18,742.15x = 25,865.13 × 10,785.57
  4. Step 4: Simplify right side
    18,742.15x = 278,970,170.17
  5. Step 5: Solve for x
    x = 278,970,170.17/18,742.15
  6. Step 6: Final answer
    x = 14,884.64

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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.