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Finding the Fourth Proportional to 14,446.99, 21,640.63 and 8,505.57

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Solution

The fourth proportional to 14,446.99, 21,640.63 and 8,505.57 is: 12,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,446.99 : 21,640.63 = 8,505.57 : x
  2. Step 2: Convert to fraction form
    14,446.99/21,640.63 = 8,505.57/x
  3. Step 3: Cross multiply
    14,446.99x = 21,640.63 × 8,505.57
  4. Step 4: Simplify right side
    14,446.99x = 184,065,893.31
  5. Step 5: Solve for x
    x = 184,065,893.31/14,446.99
  6. Step 6: Final answer
    x = 12,740.78

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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.