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Finding the Fourth Proportional to 14,653, 20,221.22 and 7,938.68

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Solution

The fourth proportional to 14,653, 20,221.22 and 7,938.68 is: 10,955.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653 : 20,221.22 = 7,938.68 : x
  2. Step 2: Convert to fraction form
    14,653/20,221.22 = 7,938.68/x
  3. Step 3: Cross multiply
    14,653x = 20,221.22 × 7,938.68
  4. Step 4: Simplify right side
    14,653x = 160,529,794.79
  5. Step 5: Solve for x
    x = 160,529,794.79/14,653
  6. Step 6: Final answer
    x = 10,955.42

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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.