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Finding the Fourth Proportional to 14,363.42, 19,821.66 and 8,774.42

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Solution

The fourth proportional to 14,363.42, 19,821.66 and 8,774.42 is: 12,108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,363.42 : 19,821.66 = 8,774.42 : x
  2. Step 2: Convert to fraction form
    14,363.42/19,821.66 = 8,774.42/x
  3. Step 3: Cross multiply
    14,363.42x = 19,821.66 × 8,774.42
  4. Step 4: Simplify right side
    14,363.42x = 173,923,569.94
  5. Step 5: Solve for x
    x = 173,923,569.94/14,363.42
  6. Step 6: Final answer
    x = 12,108.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.