Home / 18,279.72-27,420.96-5,133.12

Finding the Fourth Proportional to 18,279.72, 27,420.96 and 5,133.12

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Solution

The fourth proportional to 18,279.72, 27,420.96 and 5,133.12 is: 7,700.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.72 : 27,420.96 = 5,133.12 : x
  2. Step 2: Convert to fraction form
    18,279.72/27,420.96 = 5,133.12/x
  3. Step 3: Cross multiply
    18,279.72x = 27,420.96 × 5,133.12
  4. Step 4: Simplify right side
    18,279.72x = 140,755,078.20
  5. Step 5: Solve for x
    x = 140,755,078.20/18,279.72
  6. Step 6: Final answer
    x = 7,700.07

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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.