Home / 15,388.41-21,232.49-9,716.34

Finding the Fourth Proportional to 15,388.41, 21,232.49 and 9,716.34

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Solution

The fourth proportional to 15,388.41, 21,232.49 and 9,716.34 is: 13,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.41 : 21,232.49 = 9,716.34 : x
  2. Step 2: Convert to fraction form
    15,388.41/21,232.49 = 9,716.34/x
  3. Step 3: Cross multiply
    15,388.41x = 21,232.49 × 9,716.34
  4. Step 4: Simplify right side
    15,388.41x = 206,302,043.30
  5. Step 5: Solve for x
    x = 206,302,043.30/15,388.41
  6. Step 6: Final answer
    x = 13,406.33

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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.