Home / 13,408.21-18,488.75-8,370.62

Finding the Fourth Proportional to 13,408.21, 18,488.75 and 8,370.62

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Solution

The fourth proportional to 13,408.21, 18,488.75 and 8,370.62 is: 11,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.21 : 18,488.75 = 8,370.62 : x
  2. Step 2: Convert to fraction form
    13,408.21/18,488.75 = 8,370.62/x
  3. Step 3: Cross multiply
    13,408.21x = 18,488.75 × 8,370.62
  4. Step 4: Simplify right side
    13,408.21x = 154,762,300.53
  5. Step 5: Solve for x
    x = 154,762,300.53/13,408.21
  6. Step 6: Final answer
    x = 11,542.35

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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.