Home / 11,110.60-16,680.30-8,921.80

Finding the Fourth Proportional to 11,110.60, 16,680.30 and 8,921.80

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Solution

The fourth proportional to 11,110.60, 16,680.30 and 8,921.80 is: 13,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,110.60 : 16,680.30 = 8,921.80 : x
  2. Step 2: Convert to fraction form
    11,110.60/16,680.30 = 8,921.80/x
  3. Step 3: Cross multiply
    11,110.60x = 16,680.30 × 8,921.80
  4. Step 4: Simplify right side
    11,110.60x = 148,818,300.54
  5. Step 5: Solve for x
    x = 148,818,300.54/11,110.60
  6. Step 6: Final answer
    x = 13,394.26

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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.