Home / 13,959-20,936.88-3,570.84

Finding the Fourth Proportional to 13,959, 20,936.88 and 3,570.84

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Solution

The fourth proportional to 13,959, 20,936.88 and 3,570.84 is: 5,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959 : 20,936.88 = 3,570.84 : x
  2. Step 2: Convert to fraction form
    13,959/20,936.88 = 3,570.84/x
  3. Step 3: Cross multiply
    13,959x = 20,936.88 × 3,570.84
  4. Step 4: Simplify right side
    13,959x = 74,762,248.58
  5. Step 5: Solve for x
    x = 74,762,248.58/13,959
  6. Step 6: Final answer
    x = 5,355.85

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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.