Home / 20,772.54-28,659.90-12,275.43

Finding the Fourth Proportional to 20,772.54, 28,659.90 and 12,275.43

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Solution

The fourth proportional to 20,772.54, 28,659.90 and 12,275.43 is: 16,936.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.54 : 28,659.90 = 12,275.43 : x
  2. Step 2: Convert to fraction form
    20,772.54/28,659.90 = 12,275.43/x
  3. Step 3: Cross multiply
    20,772.54x = 28,659.90 × 12,275.43
  4. Step 4: Simplify right side
    20,772.54x = 351,812,596.26
  5. Step 5: Solve for x
    x = 351,812,596.26/20,772.54
  6. Step 6: Final answer
    x = 16,936.43

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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.