Home / 20,654.76-28,504.73-11,705.15

Finding the Fourth Proportional to 20,654.76, 28,504.73 and 11,705.15

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Solution

The fourth proportional to 20,654.76, 28,504.73 and 11,705.15 is: 16,153.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.76 : 28,504.73 = 11,705.15 : x
  2. Step 2: Convert to fraction form
    20,654.76/28,504.73 = 11,705.15/x
  3. Step 3: Cross multiply
    20,654.76x = 28,504.73 × 11,705.15
  4. Step 4: Simplify right side
    20,654.76x = 333,652,052.46
  5. Step 5: Solve for x
    x = 333,652,052.46/20,654.76
  6. Step 6: Final answer
    x = 16,153.76

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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.