Home / 11,116.40-16,650.30-9,885.20

Finding the Fourth Proportional to 11,116.40, 16,650.30 and 9,885.20

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Solution

The fourth proportional to 11,116.40, 16,650.30 and 9,885.20 is: 14,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.40 : 16,650.30 = 9,885.20 : x
  2. Step 2: Convert to fraction form
    11,116.40/16,650.30 = 9,885.20/x
  3. Step 3: Cross multiply
    11,116.40x = 16,650.30 × 9,885.20
  4. Step 4: Simplify right side
    11,116.40x = 164,591,545.56
  5. Step 5: Solve for x
    x = 164,591,545.56/11,116.40
  6. Step 6: Final answer
    x = 14,806.19

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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.