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Finding the Fourth Proportional to 28,446.64, 39,243.64 and 16,503.04

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Solution

The fourth proportional to 28,446.64, 39,243.64 and 16,503.04 is: 22,766.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.64 : 39,243.64 = 16,503.04 : x
  2. Step 2: Convert to fraction form
    28,446.64/39,243.64 = 16,503.04/x
  3. Step 3: Cross multiply
    28,446.64x = 39,243.64 × 16,503.04
  4. Step 4: Simplify right side
    28,446.64x = 647,639,360.67
  5. Step 5: Solve for x
    x = 647,639,360.67/28,446.64
  6. Step 6: Final answer
    x = 22,766.81

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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.