Home / 15,924.79-21,998.69-12,759.11

Finding the Fourth Proportional to 15,924.79, 21,998.69 and 12,759.11

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Solution

The fourth proportional to 15,924.79, 21,998.69 and 12,759.11 is: 17,625.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,924.79 : 21,998.69 = 12,759.11 : x
  2. Step 2: Convert to fraction form
    15,924.79/21,998.69 = 12,759.11/x
  3. Step 3: Cross multiply
    15,924.79x = 21,998.69 × 12,759.11
  4. Step 4: Simplify right side
    15,924.79x = 280,683,531.78
  5. Step 5: Solve for x
    x = 280,683,531.78/15,924.79
  6. Step 6: Final answer
    x = 17,625.58

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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.