Home / 18,388.57-25,376.72-10,431.99

Finding the Fourth Proportional to 18,388.57, 25,376.72 and 10,431.99

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Solution

The fourth proportional to 18,388.57, 25,376.72 and 10,431.99 is: 14,396.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.57 : 25,376.72 = 10,431.99 : x
  2. Step 2: Convert to fraction form
    18,388.57/25,376.72 = 10,431.99/x
  3. Step 3: Cross multiply
    18,388.57x = 25,376.72 × 10,431.99
  4. Step 4: Simplify right side
    18,388.57x = 264,729,666.45
  5. Step 5: Solve for x
    x = 264,729,666.45/18,388.57
  6. Step 6: Final answer
    x = 14,396.43

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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.