Home / 15,389.46-21,231.73-11,805.06

Finding the Fourth Proportional to 15,389.46, 21,231.73 and 11,805.06

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Solution

The fourth proportional to 15,389.46, 21,231.73 and 11,805.06 is: 16,286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.46 : 21,231.73 = 11,805.06 : x
  2. Step 2: Convert to fraction form
    15,389.46/21,231.73 = 11,805.06/x
  3. Step 3: Cross multiply
    15,389.46x = 21,231.73 × 11,805.06
  4. Step 4: Simplify right side
    15,389.46x = 250,641,846.55
  5. Step 5: Solve for x
    x = 250,641,846.55/15,389.46
  6. Step 6: Final answer
    x = 16,286.59

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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.