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Finding the Fourth Proportional to 18,897.99, 28,351.65 and 5,749.67

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Solution

The fourth proportional to 18,897.99, 28,351.65 and 5,749.67 is: 8,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.99 : 28,351.65 = 5,749.67 : x
  2. Step 2: Convert to fraction form
    18,897.99/28,351.65 = 5,749.67/x
  3. Step 3: Cross multiply
    18,897.99x = 28,351.65 × 5,749.67
  4. Step 4: Simplify right side
    18,897.99x = 163,012,489.70
  5. Step 5: Solve for x
    x = 163,012,489.70/18,897.99
  6. Step 6: Final answer
    x = 8,625.92

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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.