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Finding the Fourth Proportional to 18,321.59, 25,282.66 and 17,784.15

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Solution

The fourth proportional to 18,321.59, 25,282.66 and 17,784.15 is: 24,541.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.59 : 25,282.66 = 17,784.15 : x
  2. Step 2: Convert to fraction form
    18,321.59/25,282.66 = 17,784.15/x
  3. Step 3: Cross multiply
    18,321.59x = 25,282.66 × 17,784.15
  4. Step 4: Simplify right side
    18,321.59x = 449,630,722.60
  5. Step 5: Solve for x
    x = 449,630,722.60/18,321.59
  6. Step 6: Final answer
    x = 24,541.03

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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.