Home / 13,408.25-18,502.49-7,439.72

Finding the Fourth Proportional to 13,408.25, 18,502.49 and 7,439.72

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Solution

The fourth proportional to 13,408.25, 18,502.49 and 7,439.72 is: 10,266.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.25 : 18,502.49 = 7,439.72 : x
  2. Step 2: Convert to fraction form
    13,408.25/18,502.49 = 7,439.72/x
  3. Step 3: Cross multiply
    13,408.25x = 18,502.49 × 7,439.72
  4. Step 4: Simplify right side
    13,408.25x = 137,653,270.99
  5. Step 5: Solve for x
    x = 137,653,270.99/13,408.25
  6. Step 6: Final answer
    x = 10,266.32

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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.