Home / 14,057.60-19,400.40-8,091.20

Finding the Fourth Proportional to 14,057.60, 19,400.40 and 8,091.20

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Solution

The fourth proportional to 14,057.60, 19,400.40 and 8,091.20 is: 11,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,057.60 : 19,400.40 = 8,091.20 : x
  2. Step 2: Convert to fraction form
    14,057.60/19,400.40 = 8,091.20/x
  3. Step 3: Cross multiply
    14,057.60x = 19,400.40 × 8,091.20
  4. Step 4: Simplify right side
    14,057.60x = 156,972,516.48
  5. Step 5: Solve for x
    x = 156,972,516.48/14,057.60
  6. Step 6: Final answer
    x = 11,166.38

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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.