Home / 13,375.64-18,458.34-7,408.10

Finding the Fourth Proportional to 13,375.64, 18,458.34 and 7,408.10

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Solution

The fourth proportional to 13,375.64, 18,458.34 and 7,408.10 is: 10,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.64 : 18,458.34 = 7,408.10 : x
  2. Step 2: Convert to fraction form
    13,375.64/18,458.34 = 7,408.10/x
  3. Step 3: Cross multiply
    13,375.64x = 18,458.34 × 7,408.10
  4. Step 4: Simplify right side
    13,375.64x = 136,741,228.55
  5. Step 5: Solve for x
    x = 136,741,228.55/13,375.64
  6. Step 6: Final answer
    x = 10,223.15

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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.