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Finding the Fourth Proportional to 18,173.30, 25,064.14 and 12,813.60

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Solution

The fourth proportional to 18,173.30, 25,064.14 and 12,813.60 is: 17,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,173.30 : 25,064.14 = 12,813.60 : x
  2. Step 2: Convert to fraction form
    18,173.30/25,064.14 = 12,813.60/x
  3. Step 3: Cross multiply
    18,173.30x = 25,064.14 × 12,813.60
  4. Step 4: Simplify right side
    18,173.30x = 321,161,864.30
  5. Step 5: Solve for x
    x = 321,161,864.30/18,173.30
  6. Step 6: Final answer
    x = 17,672.18

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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.