Home / 13,679.12-20,498.15-10,554.44

Finding the Fourth Proportional to 13,679.12, 20,498.15 and 10,554.44

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Solution

The fourth proportional to 13,679.12, 20,498.15 and 10,554.44 is: 15,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.12 : 20,498.15 = 10,554.44 : x
  2. Step 2: Convert to fraction form
    13,679.12/20,498.15 = 10,554.44/x
  3. Step 3: Cross multiply
    13,679.12x = 20,498.15 × 10,554.44
  4. Step 4: Simplify right side
    13,679.12x = 216,346,339.02
  5. Step 5: Solve for x
    x = 216,346,339.02/13,679.12
  6. Step 6: Final answer
    x = 15,815.81

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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.