Home / 13,704.90-18,909.55-8,039.35

Finding the Fourth Proportional to 13,704.90, 18,909.55 and 8,039.35

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Solution

The fourth proportional to 13,704.90, 18,909.55 and 8,039.35 is: 11,092.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.90 : 18,909.55 = 8,039.35 : x
  2. Step 2: Convert to fraction form
    13,704.90/18,909.55 = 8,039.35/x
  3. Step 3: Cross multiply
    13,704.90x = 18,909.55 × 8,039.35
  4. Step 4: Simplify right side
    13,704.90x = 152,020,470.69
  5. Step 5: Solve for x
    x = 152,020,470.69/13,704.90
  6. Step 6: Final answer
    x = 11,092.42

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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.