Home / 17,785.64-26,620.52-13,103.78

Finding the Fourth Proportional to 17,785.64, 26,620.52 and 13,103.78

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Solution

The fourth proportional to 17,785.64, 26,620.52 and 13,103.78 is: 19,612.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,785.64 : 26,620.52 = 13,103.78 : x
  2. Step 2: Convert to fraction form
    17,785.64/26,620.52 = 13,103.78/x
  3. Step 3: Cross multiply
    17,785.64x = 26,620.52 × 13,103.78
  4. Step 4: Simplify right side
    17,785.64x = 348,829,238.94
  5. Step 5: Solve for x
    x = 348,829,238.94/17,785.64
  6. Step 6: Final answer
    x = 19,612.97

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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.