Home / 13,181.01-18,191.84-7,515.77

Finding the Fourth Proportional to 13,181.01, 18,191.84 and 7,515.77

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Solution

The fourth proportional to 13,181.01, 18,191.84 and 7,515.77 is: 10,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.01 : 18,191.84 = 7,515.77 : x
  2. Step 2: Convert to fraction form
    13,181.01/18,191.84 = 7,515.77/x
  3. Step 3: Cross multiply
    13,181.01x = 18,191.84 × 7,515.77
  4. Step 4: Simplify right side
    13,181.01x = 136,725,556.78
  5. Step 5: Solve for x
    x = 136,725,556.78/13,181.01
  6. Step 6: Final answer
    x = 10,372.92

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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.