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Finding the Fourth Proportional to 18,649.50, 27,986.06 and 16,898.08

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Solution

The fourth proportional to 18,649.50, 27,986.06 and 16,898.08 is: 25,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.50 : 27,986.06 = 16,898.08 : x
  2. Step 2: Convert to fraction form
    18,649.50/27,986.06 = 16,898.08/x
  3. Step 3: Cross multiply
    18,649.50x = 27,986.06 × 16,898.08
  4. Step 4: Simplify right side
    18,649.50x = 472,910,680.76
  5. Step 5: Solve for x
    x = 472,910,680.76/18,649.50
  6. Step 6: Final answer
    x = 25,357.82

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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.