Home / 13,138.85-19,707.72-6,116.45

Finding the Fourth Proportional to 13,138.85, 19,707.72 and 6,116.45

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Solution

The fourth proportional to 13,138.85, 19,707.72 and 6,116.45 is: 9,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.85 : 19,707.72 = 6,116.45 : x
  2. Step 2: Convert to fraction form
    13,138.85/19,707.72 = 6,116.45/x
  3. Step 3: Cross multiply
    13,138.85x = 19,707.72 × 6,116.45
  4. Step 4: Simplify right side
    13,138.85x = 120,541,234.72
  5. Step 5: Solve for x
    x = 120,541,234.72/13,138.85
  6. Step 6: Final answer
    x = 9,174.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.