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Finding the Fourth Proportional to 18,281.94, 25,224.73 and 11,111.73

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Solution

The fourth proportional to 18,281.94, 25,224.73 and 11,111.73 is: 15,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.94 : 25,224.73 = 11,111.73 : x
  2. Step 2: Convert to fraction form
    18,281.94/25,224.73 = 11,111.73/x
  3. Step 3: Cross multiply
    18,281.94x = 25,224.73 × 11,111.73
  4. Step 4: Simplify right side
    18,281.94x = 280,290,389.08
  5. Step 5: Solve for x
    x = 280,290,389.08/18,281.94
  6. Step 6: Final answer
    x = 15,331.55

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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.