Home / 21,965.16-30,316.50-20,193.96

Finding the Fourth Proportional to 21,965.16, 30,316.50 and 20,193.96

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Solution

The fourth proportional to 21,965.16, 30,316.50 and 20,193.96 is: 27,871.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.16 : 30,316.50 = 20,193.96 : x
  2. Step 2: Convert to fraction form
    21,965.16/30,316.50 = 20,193.96/x
  3. Step 3: Cross multiply
    21,965.16x = 30,316.50 × 20,193.96
  4. Step 4: Simplify right side
    21,965.16x = 612,210,188.34
  5. Step 5: Solve for x
    x = 612,210,188.34/21,965.16
  6. Step 6: Final answer
    x = 27,871.87

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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.