Home / 15,077.27-20,806.15-9,107.90

Finding the Fourth Proportional to 15,077.27, 20,806.15 and 9,107.90

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Solution

The fourth proportional to 15,077.27, 20,806.15 and 9,107.90 is: 12,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.27 : 20,806.15 = 9,107.90 : x
  2. Step 2: Convert to fraction form
    15,077.27/20,806.15 = 9,107.90/x
  3. Step 3: Cross multiply
    15,077.27x = 20,806.15 × 9,107.90
  4. Step 4: Simplify right side
    15,077.27x = 189,500,384.76
  5. Step 5: Solve for x
    x = 189,500,384.76/15,077.27
  6. Step 6: Final answer
    x = 12,568.61

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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.