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Finding the Fourth Proportional to 18,104.64, 24,985.59 and 12,146.28

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Solution

The fourth proportional to 18,104.64, 24,985.59 and 12,146.28 is: 16,762.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,104.64 : 24,985.59 = 12,146.28 : x
  2. Step 2: Convert to fraction form
    18,104.64/24,985.59 = 12,146.28/x
  3. Step 3: Cross multiply
    18,104.64x = 24,985.59 × 12,146.28
  4. Step 4: Simplify right side
    18,104.64x = 303,481,972.11
  5. Step 5: Solve for x
    x = 303,481,972.11/18,104.64
  6. Step 6: Final answer
    x = 16,762.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.