Home / 13,518.50-20,277.76-3,658.55

Finding the Fourth Proportional to 13,518.50, 20,277.76 and 3,658.55

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Solution

The fourth proportional to 13,518.50, 20,277.76 and 3,658.55 is: 5,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.50 : 20,277.76 = 3,658.55 : x
  2. Step 2: Convert to fraction form
    13,518.50/20,277.76 = 3,658.55/x
  3. Step 3: Cross multiply
    13,518.50x = 20,277.76 × 3,658.55
  4. Step 4: Simplify right side
    13,518.50x = 74,187,209.24
  5. Step 5: Solve for x
    x = 74,187,209.24/13,518.50
  6. Step 6: Final answer
    x = 5,487.83

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1.5x scale

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.