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Finding the Fourth Proportional to 18,476.70, 25,490.07 and 12,181.02

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Solution

The fourth proportional to 18,476.70, 25,490.07 and 12,181.02 is: 16,804.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,476.70 : 25,490.07 = 12,181.02 : x
  2. Step 2: Convert to fraction form
    18,476.70/25,490.07 = 12,181.02/x
  3. Step 3: Cross multiply
    18,476.70x = 25,490.07 × 12,181.02
  4. Step 4: Simplify right side
    18,476.70x = 310,495,052.47
  5. Step 5: Solve for x
    x = 310,495,052.47/18,476.70
  6. Step 6: Final answer
    x = 16,804.68

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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.