Home / 19,021.87-26,241.33-12,309.66

Finding the Fourth Proportional to 19,021.87, 26,241.33 and 12,309.66

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Solution

The fourth proportional to 19,021.87, 26,241.33 and 12,309.66 is: 16,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.87 : 26,241.33 = 12,309.66 : x
  2. Step 2: Convert to fraction form
    19,021.87/26,241.33 = 12,309.66/x
  3. Step 3: Cross multiply
    19,021.87x = 26,241.33 × 12,309.66
  4. Step 4: Simplify right side
    19,021.87x = 323,021,850.25
  5. Step 5: Solve for x
    x = 323,021,850.25/19,021.87
  6. Step 6: Final answer
    x = 16,981.60

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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.