Home / 71,386.28-107,084.88-18,795

Finding the Fourth Proportional to 71,386.28, 107,084.88 and 18,795

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Solution

The fourth proportional to 71,386.28, 107,084.88 and 18,795 is: 28,193.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.28 : 107,084.88 = 18,795 : x
  2. Step 2: Convert to fraction form
    71,386.28/107,084.88 = 18,795/x
  3. Step 3: Cross multiply
    71,386.28x = 107,084.88 × 18,795
  4. Step 4: Simplify right side
    71,386.28x = 2,012,660,319.60
  5. Step 5: Solve for x
    x = 2,012,660,319.60/71,386.28
  6. Step 6: Final answer
    x = 28,193.94

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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.