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Finding the Fourth Proportional to 18,654.54, 27,981.29 and 7,560.98

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Solution

The fourth proportional to 18,654.54, 27,981.29 and 7,560.98 is: 11,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.54 : 27,981.29 = 7,560.98 : x
  2. Step 2: Convert to fraction form
    18,654.54/27,981.29 = 7,560.98/x
  3. Step 3: Cross multiply
    18,654.54x = 27,981.29 × 7,560.98
  4. Step 4: Simplify right side
    18,654.54x = 211,565,796.35
  5. Step 5: Solve for x
    x = 211,565,796.35/18,654.54
  6. Step 6: Final answer
    x = 11,341.25

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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.