Home / 15,138.52-20,895.79-9,760.96

Finding the Fourth Proportional to 15,138.52, 20,895.79 and 9,760.96

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Solution

The fourth proportional to 15,138.52, 20,895.79 and 9,760.96 is: 13,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.52 : 20,895.79 = 9,760.96 : x
  2. Step 2: Convert to fraction form
    15,138.52/20,895.79 = 9,760.96/x
  3. Step 3: Cross multiply
    15,138.52x = 20,895.79 × 9,760.96
  4. Step 4: Simplify right side
    15,138.52x = 203,962,893.72
  5. Step 5: Solve for x
    x = 203,962,893.72/15,138.52
  6. Step 6: Final answer
    x = 13,473.11

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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.