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Finding the Fourth Proportional to 18,004.16, 27,017.88 and 8,765.12

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Solution

The fourth proportional to 18,004.16, 27,017.88 and 8,765.12 is: 13,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,004.16 : 27,017.88 = 8,765.12 : x
  2. Step 2: Convert to fraction form
    18,004.16/27,017.88 = 8,765.12/x
  3. Step 3: Cross multiply
    18,004.16x = 27,017.88 × 8,765.12
  4. Step 4: Simplify right side
    18,004.16x = 236,814,960.35
  5. Step 5: Solve for x
    x = 236,814,960.35/18,004.16
  6. Step 6: Final answer
    x = 13,153.35

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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.