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Finding the Fourth Proportional to 28,310.16, 39,052.08 and 16,976.64

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Solution

The fourth proportional to 28,310.16, 39,052.08 and 16,976.64 is: 23,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.16 : 39,052.08 = 16,976.64 : x
  2. Step 2: Convert to fraction form
    28,310.16/39,052.08 = 16,976.64/x
  3. Step 3: Cross multiply
    28,310.16x = 39,052.08 × 16,976.64
  4. Step 4: Simplify right side
    28,310.16x = 662,973,103.41
  5. Step 5: Solve for x
    x = 662,973,103.41/28,310.16
  6. Step 6: Final answer
    x = 23,418.20

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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.