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Finding the Fourth Proportional to 18,058.28, 27,019.20 and 10,666.76

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Solution

The fourth proportional to 18,058.28, 27,019.20 and 10,666.76 is: 15,959.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,058.28 : 27,019.20 = 10,666.76 : x
  2. Step 2: Convert to fraction form
    18,058.28/27,019.20 = 10,666.76/x
  3. Step 3: Cross multiply
    18,058.28x = 27,019.20 × 10,666.76
  4. Step 4: Simplify right side
    18,058.28x = 288,207,321.79
  5. Step 5: Solve for x
    x = 288,207,321.79/18,058.28
  6. Step 6: Final answer
    x = 15,959.84

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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.