Home / 11,138.30-15,370.88-6,102.71

Finding the Fourth Proportional to 11,138.30, 15,370.88 and 6,102.71

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Solution

The fourth proportional to 11,138.30, 15,370.88 and 6,102.71 is: 8,421.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.30 : 15,370.88 = 6,102.71 : x
  2. Step 2: Convert to fraction form
    11,138.30/15,370.88 = 6,102.71/x
  3. Step 3: Cross multiply
    11,138.30x = 15,370.88 × 6,102.71
  4. Step 4: Simplify right side
    11,138.30x = 93,804,023.08
  5. Step 5: Solve for x
    x = 93,804,023.08/11,138.30
  6. Step 6: Final answer
    x = 8,421.75

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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.