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Finding the Fourth Proportional to 28,974.80, 43,462.20 and 18,606.80

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Solution

The fourth proportional to 28,974.80, 43,462.20 and 18,606.80 is: 27,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974.80 : 43,462.20 = 18,606.80 : x
  2. Step 2: Convert to fraction form
    28,974.80/43,462.20 = 18,606.80/x
  3. Step 3: Cross multiply
    28,974.80x = 43,462.20 × 18,606.80
  4. Step 4: Simplify right side
    28,974.80x = 808,692,462.96
  5. Step 5: Solve for x
    x = 808,692,462.96/28,974.80
  6. Step 6: Final answer
    x = 27,910.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.