Home / 28,115.23-38,800.19-16,178.61

Finding the Fourth Proportional to 28,115.23, 38,800.19 and 16,178.61

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Solution

The fourth proportional to 28,115.23, 38,800.19 and 16,178.61 is: 22,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.23 : 38,800.19 = 16,178.61 : x
  2. Step 2: Convert to fraction form
    28,115.23/38,800.19 = 16,178.61/x
  3. Step 3: Cross multiply
    28,115.23x = 38,800.19 × 16,178.61
  4. Step 4: Simplify right side
    28,115.23x = 627,733,141.94
  5. Step 5: Solve for x
    x = 627,733,141.94/28,115.23
  6. Step 6: Final answer
    x = 22,327.16

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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.