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Finding the Fourth Proportional to 14,663.74, 20,219.90 and 10,893.89

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Solution

The fourth proportional to 14,663.74, 20,219.90 and 10,893.89 is: 15,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.74 : 20,219.90 = 10,893.89 : x
  2. Step 2: Convert to fraction form
    14,663.74/20,219.90 = 10,893.89/x
  3. Step 3: Cross multiply
    14,663.74x = 20,219.90 × 10,893.89
  4. Step 4: Simplify right side
    14,663.74x = 220,273,366.41
  5. Step 5: Solve for x
    x = 220,273,366.41/14,663.74
  6. Step 6: Final answer
    x = 15,021.64

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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.