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Finding the Fourth Proportional to 15,091.31, 20,827.02 and 8,719.14

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Solution

The fourth proportional to 15,091.31, 20,827.02 and 8,719.14 is: 12,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.31 : 20,827.02 = 8,719.14 : x
  2. Step 2: Convert to fraction form
    15,091.31/20,827.02 = 8,719.14/x
  3. Step 3: Cross multiply
    15,091.31x = 20,827.02 × 8,719.14
  4. Step 4: Simplify right side
    15,091.31x = 181,593,813.96
  5. Step 5: Solve for x
    x = 181,593,813.96/15,091.31
  6. Step 6: Final answer
    x = 12,033.00

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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.