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Finding the Fourth Proportional to 17,983.60, 27,007.80 and 17,400.40

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Solution

The fourth proportional to 17,983.60, 27,007.80 and 17,400.40 is: 26,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,983.60 : 27,007.80 = 17,400.40 : x
  2. Step 2: Convert to fraction form
    17,983.60/27,007.80 = 17,400.40/x
  3. Step 3: Cross multiply
    17,983.60x = 27,007.80 × 17,400.40
  4. Step 4: Simplify right side
    17,983.60x = 469,946,523.12
  5. Step 5: Solve for x
    x = 469,946,523.12/17,983.60
  6. Step 6: Final answer
    x = 26,131.95

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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.