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Finding the Fourth Proportional to 18,366.20, 27,549.30 and 9,603.80

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Solution

The fourth proportional to 18,366.20, 27,549.30 and 9,603.80 is: 14,405.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,366.20 : 27,549.30 = 9,603.80 : x
  2. Step 2: Convert to fraction form
    18,366.20/27,549.30 = 9,603.80/x
  3. Step 3: Cross multiply
    18,366.20x = 27,549.30 × 9,603.80
  4. Step 4: Simplify right side
    18,366.20x = 264,577,967.34
  5. Step 5: Solve for x
    x = 264,577,967.34/18,366.20
  6. Step 6: Final answer
    x = 14,405.70

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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.