Home / 13,705.22-18,885.11-10,518.35

Finding the Fourth Proportional to 13,705.22, 18,885.11 and 10,518.35

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Solution

The fourth proportional to 13,705.22, 18,885.11 and 10,518.35 is: 14,493.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.22 : 18,885.11 = 10,518.35 : x
  2. Step 2: Convert to fraction form
    13,705.22/18,885.11 = 10,518.35/x
  3. Step 3: Cross multiply
    13,705.22x = 18,885.11 × 10,518.35
  4. Step 4: Simplify right side
    13,705.22x = 198,640,049.75
  5. Step 5: Solve for x
    x = 198,640,049.75/13,705.22
  6. Step 6: Final answer
    x = 14,493.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.