Home / 18,731.49-25,825.34-13,360.05

Finding the Fourth Proportional to 18,731.49, 25,825.34 and 13,360.05

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Solution

The fourth proportional to 18,731.49, 25,825.34 and 13,360.05 is: 18,419.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.49 : 25,825.34 = 13,360.05 : x
  2. Step 2: Convert to fraction form
    18,731.49/25,825.34 = 13,360.05/x
  3. Step 3: Cross multiply
    18,731.49x = 25,825.34 × 13,360.05
  4. Step 4: Simplify right side
    18,731.49x = 345,027,766.87
  5. Step 5: Solve for x
    x = 345,027,766.87/18,731.49
  6. Step 6: Final answer
    x = 18,419.66

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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.