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Finding the Fourth Proportional to 18,203.79, 27,305.65 and 5,724.91

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Solution

The fourth proportional to 18,203.79, 27,305.65 and 5,724.91 is: 8,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.79 : 27,305.65 = 5,724.91 : x
  2. Step 2: Convert to fraction form
    18,203.79/27,305.65 = 5,724.91/x
  3. Step 3: Cross multiply
    18,203.79x = 27,305.65 × 5,724.91
  4. Step 4: Simplify right side
    18,203.79x = 156,322,430.03
  5. Step 5: Solve for x
    x = 156,322,430.03/18,203.79
  6. Step 6: Final answer
    x = 8,587.35

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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.