Home / 13,651.72-20,477.56-4,292.55

Finding the Fourth Proportional to 13,651.72, 20,477.56 and 4,292.55

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Solution

The fourth proportional to 13,651.72, 20,477.56 and 4,292.55 is: 6,438.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.72 : 20,477.56 = 4,292.55 : x
  2. Step 2: Convert to fraction form
    13,651.72/20,477.56 = 4,292.55/x
  3. Step 3: Cross multiply
    13,651.72x = 20,477.56 × 4,292.55
  4. Step 4: Simplify right side
    13,651.72x = 87,900,993.02
  5. Step 5: Solve for x
    x = 87,900,993.02/13,651.72
  6. Step 6: Final answer
    x = 6,438.82

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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.