Home / 11,138.60-15,371.42-6,102.72

Finding the Fourth Proportional to 11,138.60, 15,371.42 and 6,102.72

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Solution

The fourth proportional to 11,138.60, 15,371.42 and 6,102.72 is: 8,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.60 : 15,371.42 = 6,102.72 : x
  2. Step 2: Convert to fraction form
    11,138.60/15,371.42 = 6,102.72/x
  3. Step 3: Cross multiply
    11,138.60x = 15,371.42 × 6,102.72
  4. Step 4: Simplify right side
    11,138.60x = 93,807,472.26
  5. Step 5: Solve for x
    x = 93,807,472.26/11,138.60
  6. Step 6: Final answer
    x = 8,421.84

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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.