Home / 19,722.59-27,217.10-11,765.15

Finding the Fourth Proportional to 19,722.59, 27,217.10 and 11,765.15

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Solution

The fourth proportional to 19,722.59, 27,217.10 and 11,765.15 is: 16,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.59 : 27,217.10 = 11,765.15 : x
  2. Step 2: Convert to fraction form
    19,722.59/27,217.10 = 11,765.15/x
  3. Step 3: Cross multiply
    19,722.59x = 27,217.10 × 11,765.15
  4. Step 4: Simplify right side
    19,722.59x = 320,213,157.39
  5. Step 5: Solve for x
    x = 320,213,157.39/19,722.59
  6. Step 6: Final answer
    x = 16,235.86

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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.