Home / 11,165.21-15,407.03-6,129.42

Finding the Fourth Proportional to 11,165.21, 15,407.03 and 6,129.42

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Solution

The fourth proportional to 11,165.21, 15,407.03 and 6,129.42 is: 8,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.21 : 15,407.03 = 6,129.42 : x
  2. Step 2: Convert to fraction form
    11,165.21/15,407.03 = 6,129.42/x
  3. Step 3: Cross multiply
    11,165.21x = 15,407.03 × 6,129.42
  4. Step 4: Simplify right side
    11,165.21x = 94,436,157.82
  5. Step 5: Solve for x
    x = 94,436,157.82/11,165.21
  6. Step 6: Final answer
    x = 8,458.07

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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.