Home / 13,785.39-20,678.21-3,924.66

Finding the Fourth Proportional to 13,785.39, 20,678.21 and 3,924.66

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Solution

The fourth proportional to 13,785.39, 20,678.21 and 3,924.66 is: 5,887.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.39 : 20,678.21 = 3,924.66 : x
  2. Step 2: Convert to fraction form
    13,785.39/20,678.21 = 3,924.66/x
  3. Step 3: Cross multiply
    13,785.39x = 20,678.21 × 3,924.66
  4. Step 4: Simplify right side
    13,785.39x = 81,154,924.04
  5. Step 5: Solve for x
    x = 81,154,924.04/13,785.39
  6. Step 6: Final answer
    x = 5,887.02

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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.