Home / 13,362.76-20,038.22-7,121.61

Finding the Fourth Proportional to 13,362.76, 20,038.22 and 7,121.61

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Solution

The fourth proportional to 13,362.76, 20,038.22 and 7,121.61 is: 10,679.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.76 : 20,038.22 = 7,121.61 : x
  2. Step 2: Convert to fraction form
    13,362.76/20,038.22 = 7,121.61/x
  3. Step 3: Cross multiply
    13,362.76x = 20,038.22 × 7,121.61
  4. Step 4: Simplify right side
    13,362.76x = 142,704,387.93
  5. Step 5: Solve for x
    x = 142,704,387.93/13,362.76
  6. Step 6: Final answer
    x = 10,679.26

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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.