Home / 15,389.48-21,236.82-9,431.24

Finding the Fourth Proportional to 15,389.48, 21,236.82 and 9,431.24

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Solution

The fourth proportional to 15,389.48, 21,236.82 and 9,431.24 is: 13,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.48 : 21,236.82 = 9,431.24 : x
  2. Step 2: Convert to fraction form
    15,389.48/21,236.82 = 9,431.24/x
  3. Step 3: Cross multiply
    15,389.48x = 21,236.82 × 9,431.24
  4. Step 4: Simplify right side
    15,389.48x = 200,289,546.26
  5. Step 5: Solve for x
    x = 200,289,546.26/15,389.48
  6. Step 6: Final answer
    x = 13,014.71

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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.