Home / 20,732.97-28,611.56-11,783.45

Finding the Fourth Proportional to 20,732.97, 28,611.56 and 11,783.45

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Solution

The fourth proportional to 20,732.97, 28,611.56 and 11,783.45 is: 16,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.97 : 28,611.56 = 11,783.45 : x
  2. Step 2: Convert to fraction form
    20,732.97/28,611.56 = 11,783.45/x
  3. Step 3: Cross multiply
    20,732.97x = 28,611.56 × 11,783.45
  4. Step 4: Simplify right side
    20,732.97x = 337,142,886.68
  5. Step 5: Solve for x
    x = 337,142,886.68/20,732.97
  6. Step 6: Final answer
    x = 16,261.20

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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.