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Finding the Fourth Proportional to 21,609.07, 29,821.07 and 12,050.53

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Solution

The fourth proportional to 21,609.07, 29,821.07 and 12,050.53 is: 16,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.07 : 29,821.07 = 12,050.53 : x
  2. Step 2: Convert to fraction form
    21,609.07/29,821.07 = 12,050.53/x
  3. Step 3: Cross multiply
    21,609.07x = 29,821.07 × 12,050.53
  4. Step 4: Simplify right side
    21,609.07x = 359,359,654.24
  5. Step 5: Solve for x
    x = 359,359,654.24/21,609.07
  6. Step 6: Final answer
    x = 16,630.04

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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.