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Finding the Fourth Proportional to 18,124.76, 27,148.80 and 12,181.52

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Solution

The fourth proportional to 18,124.76, 27,148.80 and 12,181.52 is: 18,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,124.76 : 27,148.80 = 12,181.52 : x
  2. Step 2: Convert to fraction form
    18,124.76/27,148.80 = 12,181.52/x
  3. Step 3: Cross multiply
    18,124.76x = 27,148.80 × 12,181.52
  4. Step 4: Simplify right side
    18,124.76x = 330,713,650.18
  5. Step 5: Solve for x
    x = 330,713,650.18/18,124.76
  6. Step 6: Final answer
    x = 18,246.51

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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.