Home / 10,103.72-15,121.14-9,227.30

Finding the Fourth Proportional to 10,103.72, 15,121.14 and 9,227.30

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Solution

The fourth proportional to 10,103.72, 15,121.14 and 9,227.30 is: 13,809.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.72 : 15,121.14 = 9,227.30 : x
  2. Step 2: Convert to fraction form
    10,103.72/15,121.14 = 9,227.30/x
  3. Step 3: Cross multiply
    10,103.72x = 15,121.14 × 9,227.30
  4. Step 4: Simplify right side
    10,103.72x = 139,527,295.12
  5. Step 5: Solve for x
    x = 139,527,295.12/10,103.72
  6. Step 6: Final answer
    x = 13,809.50

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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.