Home / 13,818.43-20,729.80-5,498.51

Finding the Fourth Proportional to 13,818.43, 20,729.80 and 5,498.51

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Solution

The fourth proportional to 13,818.43, 20,729.80 and 5,498.51 is: 8,248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.43 : 20,729.80 = 5,498.51 : x
  2. Step 2: Convert to fraction form
    13,818.43/20,729.80 = 5,498.51/x
  3. Step 3: Cross multiply
    13,818.43x = 20,729.80 × 5,498.51
  4. Step 4: Simplify right side
    13,818.43x = 113,983,012.60
  5. Step 5: Solve for x
    x = 113,983,012.60/13,818.43
  6. Step 6: Final answer
    x = 8,248.63

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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.