Home / 15,511.29-21,406.05-9,546.45

Finding the Fourth Proportional to 15,511.29, 21,406.05 and 9,546.45

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Solution

The fourth proportional to 15,511.29, 21,406.05 and 9,546.45 is: 13,174.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.29 : 21,406.05 = 9,546.45 : x
  2. Step 2: Convert to fraction form
    15,511.29/21,406.05 = 9,546.45/x
  3. Step 3: Cross multiply
    15,511.29x = 21,406.05 × 9,546.45
  4. Step 4: Simplify right side
    15,511.29x = 204,351,786.02
  5. Step 5: Solve for x
    x = 204,351,786.02/15,511.29
  6. Step 6: Final answer
    x = 13,174.39

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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.