Home / 13,310.87-18,369.05-7,342.45

Finding the Fourth Proportional to 13,310.87, 18,369.05 and 7,342.45

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Solution

The fourth proportional to 13,310.87, 18,369.05 and 7,342.45 is: 10,132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.87 : 18,369.05 = 7,342.45 : x
  2. Step 2: Convert to fraction form
    13,310.87/18,369.05 = 7,342.45/x
  3. Step 3: Cross multiply
    13,310.87x = 18,369.05 × 7,342.45
  4. Step 4: Simplify right side
    13,310.87x = 134,873,748.54
  5. Step 5: Solve for x
    x = 134,873,748.54/13,310.87
  6. Step 6: Final answer
    x = 10,132.61

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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.