Home / 13,818.60-20,729.12-4,458.24

Finding the Fourth Proportional to 13,818.60, 20,729.12 and 4,458.24

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Solution

The fourth proportional to 13,818.60, 20,729.12 and 4,458.24 is: 6,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.60 : 20,729.12 = 4,458.24 : x
  2. Step 2: Convert to fraction form
    13,818.60/20,729.12 = 4,458.24/x
  3. Step 3: Cross multiply
    13,818.60x = 20,729.12 × 4,458.24
  4. Step 4: Simplify right side
    13,818.60x = 92,415,369.66
  5. Step 5: Solve for x
    x = 92,415,369.66/13,818.60
  6. Step 6: Final answer
    x = 6,687.75

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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.