Home / 13,799.40-20,699.10-8,269.80

Finding the Fourth Proportional to 13,799.40, 20,699.10 and 8,269.80

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Solution

The fourth proportional to 13,799.40, 20,699.10 and 8,269.80 is: 12,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.40 : 20,699.10 = 8,269.80 : x
  2. Step 2: Convert to fraction form
    13,799.40/20,699.10 = 8,269.80/x
  3. Step 3: Cross multiply
    13,799.40x = 20,699.10 × 8,269.80
  4. Step 4: Simplify right side
    13,799.40x = 171,177,417.18
  5. Step 5: Solve for x
    x = 171,177,417.18/13,799.40
  6. Step 6: Final answer
    x = 12,404.70

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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.