Home / 26,406.24-36,439.68-15,789.60

Finding the Fourth Proportional to 26,406.24, 36,439.68 and 15,789.60

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Solution

The fourth proportional to 26,406.24, 36,439.68 and 15,789.60 is: 21,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,406.24 : 36,439.68 = 15,789.60 : x
  2. Step 2: Convert to fraction form
    26,406.24/36,439.68 = 15,789.60/x
  3. Step 3: Cross multiply
    26,406.24x = 36,439.68 × 15,789.60
  4. Step 4: Simplify right side
    26,406.24x = 575,367,971.33
  5. Step 5: Solve for x
    x = 575,367,971.33/26,406.24
  6. Step 6: Final answer
    x = 21,789.09

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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.