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Finding the Fourth Proportional to 15,020.51, 20,727.94 and 8,305.96

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Solution

The fourth proportional to 15,020.51, 20,727.94 and 8,305.96 is: 11,462.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.51 : 20,727.94 = 8,305.96 : x
  2. Step 2: Convert to fraction form
    15,020.51/20,727.94 = 8,305.96/x
  3. Step 3: Cross multiply
    15,020.51x = 20,727.94 × 8,305.96
  4. Step 4: Simplify right side
    15,020.51x = 172,165,440.52
  5. Step 5: Solve for x
    x = 172,165,440.52/15,020.51
  6. Step 6: Final answer
    x = 11,462.02

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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.