Home / 13,789.80-19,029.06-8,199.72

Finding the Fourth Proportional to 13,789.80, 19,029.06 and 8,199.72

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Solution

The fourth proportional to 13,789.80, 19,029.06 and 8,199.72 is: 11,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.80 : 19,029.06 = 8,199.72 : x
  2. Step 2: Convert to fraction form
    13,789.80/19,029.06 = 8,199.72/x
  3. Step 3: Cross multiply
    13,789.80x = 19,029.06 × 8,199.72
  4. Step 4: Simplify right side
    13,789.80x = 156,032,963.86
  5. Step 5: Solve for x
    x = 156,032,963.86/13,789.80
  6. Step 6: Final answer
    x = 11,315.10

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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.