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Finding the Fourth Proportional to 18,058.80, 27,088.20 and 9,310.80

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Solution

The fourth proportional to 18,058.80, 27,088.20 and 9,310.80 is: 13,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,058.80 : 27,088.20 = 9,310.80 : x
  2. Step 2: Convert to fraction form
    18,058.80/27,088.20 = 9,310.80/x
  3. Step 3: Cross multiply
    18,058.80x = 27,088.20 × 9,310.80
  4. Step 4: Simplify right side
    18,058.80x = 252,212,812.56
  5. Step 5: Solve for x
    x = 252,212,812.56/18,058.80
  6. Step 6: Final answer
    x = 13,966.20

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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.