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Finding the Fourth Proportional to 19,717.80, 29,544.30 and 18,551.40

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Solution

The fourth proportional to 19,717.80, 29,544.30 and 18,551.40 is: 27,796.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,717.80 : 29,544.30 = 18,551.40 : x
  2. Step 2: Convert to fraction form
    19,717.80/29,544.30 = 18,551.40/x
  3. Step 3: Cross multiply
    19,717.80x = 29,544.30 × 18,551.40
  4. Step 4: Simplify right side
    19,717.80x = 548,088,127.02
  5. Step 5: Solve for x
    x = 548,088,127.02/19,717.80
  6. Step 6: Final answer
    x = 27,796.62

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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.