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Finding the Fourth Proportional to 17,963.03, 26,931.11 and 12,400.49

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Solution

The fourth proportional to 17,963.03, 26,931.11 and 12,400.49 is: 18,591.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,963.03 : 26,931.11 = 12,400.49 : x
  2. Step 2: Convert to fraction form
    17,963.03/26,931.11 = 12,400.49/x
  3. Step 3: Cross multiply
    17,963.03x = 26,931.11 × 12,400.49
  4. Step 4: Simplify right side
    17,963.03x = 333,958,763.59
  5. Step 5: Solve for x
    x = 333,958,763.59/17,963.03
  6. Step 6: Final answer
    x = 18,591.45

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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.