Home / 12,190.87-16,823.25-6,813.39

Finding the Fourth Proportional to 12,190.87, 16,823.25 and 6,813.39

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Solution

The fourth proportional to 12,190.87, 16,823.25 and 6,813.39 is: 9,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.87 : 16,823.25 = 6,813.39 : x
  2. Step 2: Convert to fraction form
    12,190.87/16,823.25 = 6,813.39/x
  3. Step 3: Cross multiply
    12,190.87x = 16,823.25 × 6,813.39
  4. Step 4: Simplify right side
    12,190.87x = 114,623,388.34
  5. Step 5: Solve for x
    x = 114,623,388.34/12,190.87
  6. Step 6: Final answer
    x = 9,402.40

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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.