Home / 18,803.33-25,949.81-10,420.37

Finding the Fourth Proportional to 18,803.33, 25,949.81 and 10,420.37

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Solution

The fourth proportional to 18,803.33, 25,949.81 and 10,420.37 is: 14,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.33 : 25,949.81 = 10,420.37 : x
  2. Step 2: Convert to fraction form
    18,803.33/25,949.81 = 10,420.37/x
  3. Step 3: Cross multiply
    18,803.33x = 25,949.81 × 10,420.37
  4. Step 4: Simplify right side
    18,803.33x = 270,406,569.53
  5. Step 5: Solve for x
    x = 270,406,569.53/18,803.33
  6. Step 6: Final answer
    x = 14,380.78

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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.