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Finding the Fourth Proportional to 21,447.99, 32,165.15 and 20,048.67

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Solution

The fourth proportional to 21,447.99, 32,165.15 and 20,048.67 is: 30,066.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.99 : 32,165.15 = 20,048.67 : x
  2. Step 2: Convert to fraction form
    21,447.99/32,165.15 = 20,048.67/x
  3. Step 3: Cross multiply
    21,447.99x = 32,165.15 × 20,048.67
  4. Step 4: Simplify right side
    21,447.99x = 644,868,377.61
  5. Step 5: Solve for x
    x = 644,868,377.61/21,447.99
  6. Step 6: Final answer
    x = 30,066.61

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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.