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Finding the Fourth Proportional to 14,821.29, 22,221.45 and 7,420.44

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Solution

The fourth proportional to 14,821.29, 22,221.45 and 7,420.44 is: 11,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,821.29 : 22,221.45 = 7,420.44 : x
  2. Step 2: Convert to fraction form
    14,821.29/22,221.45 = 7,420.44/x
  3. Step 3: Cross multiply
    14,821.29x = 22,221.45 × 7,420.44
  4. Step 4: Simplify right side
    14,821.29x = 164,892,936.44
  5. Step 5: Solve for x
    x = 164,892,936.44/14,821.29
  6. Step 6: Final answer
    x = 11,125.41

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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.