Home / 15,766.68-21,735.41-12,403.65

Finding the Fourth Proportional to 15,766.68, 21,735.41 and 12,403.65

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Solution

The fourth proportional to 15,766.68, 21,735.41 and 12,403.65 is: 17,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.68 : 21,735.41 = 12,403.65 : x
  2. Step 2: Convert to fraction form
    15,766.68/21,735.41 = 12,403.65/x
  3. Step 3: Cross multiply
    15,766.68x = 21,735.41 × 12,403.65
  4. Step 4: Simplify right side
    15,766.68x = 269,598,418.25
  5. Step 5: Solve for x
    x = 269,598,418.25/15,766.68
  6. Step 6: Final answer
    x = 17,099.25

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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.