Home / 13,738.60-20,607.90-8,813.80

Finding the Fourth Proportional to 13,738.60, 20,607.90 and 8,813.80

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Solution

The fourth proportional to 13,738.60, 20,607.90 and 8,813.80 is: 13,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.60 : 20,607.90 = 8,813.80 : x
  2. Step 2: Convert to fraction form
    13,738.60/20,607.90 = 8,813.80/x
  3. Step 3: Cross multiply
    13,738.60x = 20,607.90 × 8,813.80
  4. Step 4: Simplify right side
    13,738.60x = 181,633,909.02
  5. Step 5: Solve for x
    x = 181,633,909.02/13,738.60
  6. Step 6: Final answer
    x = 13,220.70

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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.