Home / 21,294.75-31,970.38-18,194.67

Finding the Fourth Proportional to 21,294.75, 31,970.38 and 18,194.67

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Solution

The fourth proportional to 21,294.75, 31,970.38 and 18,194.67 is: 27,316.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.75 : 31,970.38 = 18,194.67 : x
  2. Step 2: Convert to fraction form
    21,294.75/31,970.38 = 18,194.67/x
  3. Step 3: Cross multiply
    21,294.75x = 31,970.38 × 18,194.67
  4. Step 4: Simplify right side
    21,294.75x = 581,690,513.87
  5. Step 5: Solve for x
    x = 581,690,513.87/21,294.75
  6. Step 6: Final answer
    x = 27,316.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.