Home / 12,755.39-19,113.59-5,355.81

Finding the Fourth Proportional to 12,755.39, 19,113.59 and 5,355.81

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Solution

The fourth proportional to 12,755.39, 19,113.59 and 5,355.81 is: 8,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.39 : 19,113.59 = 5,355.81 : x
  2. Step 2: Convert to fraction form
    12,755.39/19,113.59 = 5,355.81/x
  3. Step 3: Cross multiply
    12,755.39x = 19,113.59 × 5,355.81
  4. Step 4: Simplify right side
    12,755.39x = 102,368,729.68
  5. Step 5: Solve for x
    x = 102,368,729.68/12,755.39
  6. Step 6: Final answer
    x = 8,025.53

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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.