Home / 13,789.83-19,030.10-8,199.75

Finding the Fourth Proportional to 13,789.83, 19,030.10 and 8,199.75

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Solution

The fourth proportional to 13,789.83, 19,030.10 and 8,199.75 is: 11,315.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.83 : 19,030.10 = 8,199.75 : x
  2. Step 2: Convert to fraction form
    13,789.83/19,030.10 = 8,199.75/x
  3. Step 3: Cross multiply
    13,789.83x = 19,030.10 × 8,199.75
  4. Step 4: Simplify right side
    13,789.83x = 156,042,021.48
  5. Step 5: Solve for x
    x = 156,042,021.48/13,789.83
  6. Step 6: Final answer
    x = 11,315.73

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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.