Home / 25,458.44-35,136.65-15,388.38

Finding the Fourth Proportional to 25,458.44, 35,136.65 and 15,388.38

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Solution

The fourth proportional to 25,458.44, 35,136.65 and 15,388.38 is: 21,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,458.44 : 35,136.65 = 15,388.38 : x
  2. Step 2: Convert to fraction form
    25,458.44/35,136.65 = 15,388.38/x
  3. Step 3: Cross multiply
    25,458.44x = 35,136.65 × 15,388.38
  4. Step 4: Simplify right side
    25,458.44x = 540,696,160.60
  5. Step 5: Solve for x
    x = 540,696,160.60/25,458.44
  6. Step 6: Final answer
    x = 21,238.39

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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.