Home / 21,524.94-29,722.14-20,424.15

Finding the Fourth Proportional to 21,524.94, 29,722.14 and 20,424.15

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Solution

The fourth proportional to 21,524.94, 29,722.14 and 20,424.15 is: 28,202.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,524.94 : 29,722.14 = 20,424.15 : x
  2. Step 2: Convert to fraction form
    21,524.94/29,722.14 = 20,424.15/x
  3. Step 3: Cross multiply
    21,524.94x = 29,722.14 × 20,424.15
  4. Step 4: Simplify right side
    21,524.94x = 607,049,445.68
  5. Step 5: Solve for x
    x = 607,049,445.68/21,524.94
  6. Step 6: Final answer
    x = 28,202.14

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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.