Home / 13,377.11-18,460.18-7,408.65

Finding the Fourth Proportional to 13,377.11, 18,460.18 and 7,408.65

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Solution

The fourth proportional to 13,377.11, 18,460.18 and 7,408.65 is: 10,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,377.11 : 18,460.18 = 7,408.65 : x
  2. Step 2: Convert to fraction form
    13,377.11/18,460.18 = 7,408.65/x
  3. Step 3: Cross multiply
    13,377.11x = 18,460.18 × 7,408.65
  4. Step 4: Simplify right side
    13,377.11x = 136,764,945.53
  5. Step 5: Solve for x
    x = 136,764,945.53/13,377.11
  6. Step 6: Final answer
    x = 10,223.81

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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.