Home / 26,419.64-39,629.12-6,429.24

Finding the Fourth Proportional to 26,419.64, 39,629.12 and 6,429.24

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Solution

The fourth proportional to 26,419.64, 39,629.12 and 6,429.24 is: 9,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,419.64 : 39,629.12 = 6,429.24 : x
  2. Step 2: Convert to fraction form
    26,419.64/39,629.12 = 6,429.24/x
  3. Step 3: Cross multiply
    26,419.64x = 39,629.12 × 6,429.24
  4. Step 4: Simplify right side
    26,419.64x = 254,785,139.54
  5. Step 5: Solve for x
    x = 254,785,139.54/26,419.64
  6. Step 6: Final answer
    x = 9,643.78

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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.