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Finding the Fourth Proportional to 18,062.88, 27,068.40 and 10,255.20

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Solution

The fourth proportional to 18,062.88, 27,068.40 and 10,255.20 is: 15,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,062.88 : 27,068.40 = 10,255.20 : x
  2. Step 2: Convert to fraction form
    18,062.88/27,068.40 = 10,255.20/x
  3. Step 3: Cross multiply
    18,062.88x = 27,068.40 × 10,255.20
  4. Step 4: Simplify right side
    18,062.88x = 277,591,855.68
  5. Step 5: Solve for x
    x = 277,591,855.68/18,062.88
  6. Step 6: Final answer
    x = 15,368.08

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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.