Home / 18,158.94-25,062.32-15,129.26

Finding the Fourth Proportional to 18,158.94, 25,062.32 and 15,129.26

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Solution

The fourth proportional to 18,158.94, 25,062.32 and 15,129.26 is: 20,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.94 : 25,062.32 = 15,129.26 : x
  2. Step 2: Convert to fraction form
    18,158.94/25,062.32 = 15,129.26/x
  3. Step 3: Cross multiply
    18,158.94x = 25,062.32 × 15,129.26
  4. Step 4: Simplify right side
    18,158.94x = 379,174,460.40
  5. Step 5: Solve for x
    x = 379,174,460.40/18,158.94
  6. Step 6: Final answer
    x = 20,880.87

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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.