Home / 18,388.75-25,376.88-10,005.25

Finding the Fourth Proportional to 18,388.75, 25,376.88 and 10,005.25

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Solution

The fourth proportional to 18,388.75, 25,376.88 and 10,005.25 is: 13,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.75 : 25,376.88 = 10,005.25 : x
  2. Step 2: Convert to fraction form
    18,388.75/25,376.88 = 10,005.25/x
  3. Step 3: Cross multiply
    18,388.75x = 25,376.88 × 10,005.25
  4. Step 4: Simplify right side
    18,388.75x = 253,902,028.62
  5. Step 5: Solve for x
    x = 253,902,028.62/18,388.75
  6. Step 6: Final answer
    x = 13,807.47

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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.