Home / 26,400-39,579.36-13,903.68

Finding the Fourth Proportional to 26,400, 39,579.36 and 13,903.68

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Solution

The fourth proportional to 26,400, 39,579.36 and 13,903.68 is: 20,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,400 : 39,579.36 = 13,903.68 : x
  2. Step 2: Convert to fraction form
    26,400/39,579.36 = 13,903.68/x
  3. Step 3: Cross multiply
    26,400x = 39,579.36 × 13,903.68
  4. Step 4: Simplify right side
    26,400x = 550,298,756.04
  5. Step 5: Solve for x
    x = 550,298,756.04/26,400
  6. Step 6: Final answer
    x = 20,844.65

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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.