Home / 20,601.15-30,880.17-9,515.11

Finding the Fourth Proportional to 20,601.15, 30,880.17 and 9,515.11

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Solution

The fourth proportional to 20,601.15, 30,880.17 and 9,515.11 is: 14,262.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.15 : 30,880.17 = 9,515.11 : x
  2. Step 2: Convert to fraction form
    20,601.15/30,880.17 = 9,515.11/x
  3. Step 3: Cross multiply
    20,601.15x = 30,880.17 × 9,515.11
  4. Step 4: Simplify right side
    20,601.15x = 293,828,059.97
  5. Step 5: Solve for x
    x = 293,828,059.97/20,601.15
  6. Step 6: Final answer
    x = 14,262.71

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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.