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Finding the Fourth Proportional to 28,010, 38,659.48 and 16,081.56

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Solution

The fourth proportional to 28,010, 38,659.48 and 16,081.56 is: 22,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010 : 38,659.48 = 16,081.56 : x
  2. Step 2: Convert to fraction form
    28,010/38,659.48 = 16,081.56/x
  3. Step 3: Cross multiply
    28,010x = 38,659.48 × 16,081.56
  4. Step 4: Simplify right side
    28,010x = 621,704,747.19
  5. Step 5: Solve for x
    x = 621,704,747.19/28,010
  6. Step 6: Final answer
    x = 22,195.81

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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.