Home / 20,281.59-27,989.37-11,783.61

Finding the Fourth Proportional to 20,281.59, 27,989.37 and 11,783.61

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Solution

The fourth proportional to 20,281.59, 27,989.37 and 11,783.61 is: 16,261.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.59 : 27,989.37 = 11,783.61 : x
  2. Step 2: Convert to fraction form
    20,281.59/27,989.37 = 11,783.61/x
  3. Step 3: Cross multiply
    20,281.59x = 27,989.37 × 11,783.61
  4. Step 4: Simplify right side
    20,281.59x = 329,815,820.23
  5. Step 5: Solve for x
    x = 329,815,820.23/20,281.59
  6. Step 6: Final answer
    x = 16,261.83

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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.