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Finding the Fourth Proportional to 18,125.97, 27,187.88 and 10,777.20

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Solution

The fourth proportional to 18,125.97, 27,187.88 and 10,777.20 is: 16,165.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.97 : 27,187.88 = 10,777.20 : x
  2. Step 2: Convert to fraction form
    18,125.97/27,187.88 = 10,777.20/x
  3. Step 3: Cross multiply
    18,125.97x = 27,187.88 × 10,777.20
  4. Step 4: Simplify right side
    18,125.97x = 293,009,166.45
  5. Step 5: Solve for x
    x = 293,009,166.45/18,125.97
  6. Step 6: Final answer
    x = 16,165.16

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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.