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Finding the Fourth Proportional to 18,897.03, 28,347.12 and 5,749.50

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Solution

The fourth proportional to 18,897.03, 28,347.12 and 5,749.50 is: 8,624.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.03 : 28,347.12 = 5,749.50 : x
  2. Step 2: Convert to fraction form
    18,897.03/28,347.12 = 5,749.50/x
  3. Step 3: Cross multiply
    18,897.03x = 28,347.12 × 5,749.50
  4. Step 4: Simplify right side
    18,897.03x = 162,981,766.44
  5. Step 5: Solve for x
    x = 162,981,766.44/18,897.03
  6. Step 6: Final answer
    x = 8,624.73

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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.