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Finding the Fourth Proportional to 14,920.45, 22,379.41 and 7,021.11

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Solution

The fourth proportional to 14,920.45, 22,379.41 and 7,021.11 is: 10,531.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.45 : 22,379.41 = 7,021.11 : x
  2. Step 2: Convert to fraction form
    14,920.45/22,379.41 = 7,021.11/x
  3. Step 3: Cross multiply
    14,920.45x = 22,379.41 × 7,021.11
  4. Step 4: Simplify right side
    14,920.45x = 157,128,299.35
  5. Step 5: Solve for x
    x = 157,128,299.35/14,920.45
  6. Step 6: Final answer
    x = 10,531.07

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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.