Home / 15,401.16-21,259.35-11,991.42

Finding the Fourth Proportional to 15,401.16, 21,259.35 and 11,991.42

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Solution

The fourth proportional to 15,401.16, 21,259.35 and 11,991.42 is: 16,552.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.16 : 21,259.35 = 11,991.42 : x
  2. Step 2: Convert to fraction form
    15,401.16/21,259.35 = 11,991.42/x
  3. Step 3: Cross multiply
    15,401.16x = 21,259.35 × 11,991.42
  4. Step 4: Simplify right side
    15,401.16x = 254,929,794.78
  5. Step 5: Solve for x
    x = 254,929,794.78/15,401.16
  6. Step 6: Final answer
    x = 16,552.64

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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.