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Finding the Fourth Proportional to 22,190.97, 30,623.55 and 12,758.97

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Solution

The fourth proportional to 22,190.97, 30,623.55 and 12,758.97 is: 17,607.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.97 : 30,623.55 = 12,758.97 : x
  2. Step 2: Convert to fraction form
    22,190.97/30,623.55 = 12,758.97/x
  3. Step 3: Cross multiply
    22,190.97x = 30,623.55 × 12,758.97
  4. Step 4: Simplify right side
    22,190.97x = 390,724,955.74
  5. Step 5: Solve for x
    x = 390,724,955.74/22,190.97
  6. Step 6: Final answer
    x = 17,607.39

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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.