Home / 13,375.55-18,458.82-7,407.22

Finding the Fourth Proportional to 13,375.55, 18,458.82 and 7,407.22

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Solution

The fourth proportional to 13,375.55, 18,458.82 and 7,407.22 is: 10,222.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.55 : 18,458.82 = 7,407.22 : x
  2. Step 2: Convert to fraction form
    13,375.55/18,458.82 = 7,407.22/x
  3. Step 3: Cross multiply
    13,375.55x = 18,458.82 × 7,407.22
  4. Step 4: Simplify right side
    13,375.55x = 136,728,549.81
  5. Step 5: Solve for x
    x = 136,728,549.81/13,375.55
  6. Step 6: Final answer
    x = 10,222.27

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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.