Home / 13,909.61-20,845.77-8,976.71

Finding the Fourth Proportional to 13,909.61, 20,845.77 and 8,976.71

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Solution

The fourth proportional to 13,909.61, 20,845.77 and 8,976.71 is: 13,453.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.61 : 20,845.77 = 8,976.71 : x
  2. Step 2: Convert to fraction form
    13,909.61/20,845.77 = 8,976.71/x
  3. Step 3: Cross multiply
    13,909.61x = 20,845.77 × 8,976.71
  4. Step 4: Simplify right side
    13,909.61x = 187,126,432.02
  5. Step 5: Solve for x
    x = 187,126,432.02/13,909.61
  6. Step 6: Final answer
    x = 13,453.03

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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.