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Finding the Fourth Proportional to 18,630.54, 27,959.58 and 13,713.30

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Solution

The fourth proportional to 18,630.54, 27,959.58 and 13,713.30 is: 20,580.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.54 : 27,959.58 = 13,713.30 : x
  2. Step 2: Convert to fraction form
    18,630.54/27,959.58 = 13,713.30/x
  3. Step 3: Cross multiply
    18,630.54x = 27,959.58 × 13,713.30
  4. Step 4: Simplify right side
    18,630.54x = 383,418,108.41
  5. Step 5: Solve for x
    x = 383,418,108.41/18,630.54
  6. Step 6: Final answer
    x = 20,580.09

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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.