Home / 13,385.79-20,079.67-3,525

Finding the Fourth Proportional to 13,385.79, 20,079.67 and 3,525

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Solution

The fourth proportional to 13,385.79, 20,079.67 and 3,525 is: 5,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.79 : 20,079.67 = 3,525 : x
  2. Step 2: Convert to fraction form
    13,385.79/20,079.67 = 3,525/x
  3. Step 3: Cross multiply
    13,385.79x = 20,079.67 × 3,525
  4. Step 4: Simplify right side
    13,385.79x = 70,780,827.94
  5. Step 5: Solve for x
    x = 70,780,827.94/13,385.79
  6. Step 6: Final answer
    x = 5,287.76

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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.