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Finding the Fourth Proportional to 15,057.70, 20,777.94 and 8,341.65

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Solution

The fourth proportional to 15,057.70, 20,777.94 and 8,341.65 is: 11,510.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.70 : 20,777.94 = 8,341.65 : x
  2. Step 2: Convert to fraction form
    15,057.70/20,777.94 = 8,341.65/x
  3. Step 3: Cross multiply
    15,057.70x = 20,777.94 × 8,341.65
  4. Step 4: Simplify right side
    15,057.70x = 173,322,326.66
  5. Step 5: Solve for x
    x = 173,322,326.66/15,057.70
  6. Step 6: Final answer
    x = 11,510.55

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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.