Home / 15,077.24-20,806.57-9,107.79

Finding the Fourth Proportional to 15,077.24, 20,806.57 and 9,107.79

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Solution

The fourth proportional to 15,077.24, 20,806.57 and 9,107.79 is: 12,568.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.24 : 20,806.57 = 9,107.79 : x
  2. Step 2: Convert to fraction form
    15,077.24/20,806.57 = 9,107.79/x
  3. Step 3: Cross multiply
    15,077.24x = 20,806.57 × 9,107.79
  4. Step 4: Simplify right side
    15,077.24x = 189,501,920.58
  5. Step 5: Solve for x
    x = 189,501,920.58/15,077.24
  6. Step 6: Final answer
    x = 12,568.74

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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.