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Finding the Fourth Proportional to 15,091.52, 20,826.01 and 8,376.82

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Solution

The fourth proportional to 15,091.52, 20,826.01 and 8,376.82 is: 11,559.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.52 : 20,826.01 = 8,376.82 : x
  2. Step 2: Convert to fraction form
    15,091.52/20,826.01 = 8,376.82/x
  3. Step 3: Cross multiply
    15,091.52x = 20,826.01 × 8,376.82
  4. Step 4: Simplify right side
    15,091.52x = 174,455,695.49
  5. Step 5: Solve for x
    x = 174,455,695.49/15,091.52
  6. Step 6: Final answer
    x = 11,559.85

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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.