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Finding the Fourth Proportional to 15,093.92, 20,826.36 and 9,124.40

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Solution

The fourth proportional to 15,093.92, 20,826.36 and 9,124.40 is: 12,589.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.92 : 20,826.36 = 9,124.40 : x
  2. Step 2: Convert to fraction form
    15,093.92/20,826.36 = 9,124.40/x
  3. Step 3: Cross multiply
    15,093.92x = 20,826.36 × 9,124.40
  4. Step 4: Simplify right side
    15,093.92x = 190,028,039.18
  5. Step 5: Solve for x
    x = 190,028,039.18/15,093.92
  6. Step 6: Final answer
    x = 12,589.71

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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.