Home / 21,968.96-30,367-20,225.16

Finding the Fourth Proportional to 21,968.96, 30,367 and 20,225.16

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Solution

The fourth proportional to 21,968.96, 30,367 and 20,225.16 is: 27,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.96 : 30,367 = 20,225.16 : x
  2. Step 2: Convert to fraction form
    21,968.96/30,367 = 20,225.16/x
  3. Step 3: Cross multiply
    21,968.96x = 30,367 × 20,225.16
  4. Step 4: Simplify right side
    21,968.96x = 614,177,433.72
  5. Step 5: Solve for x
    x = 614,177,433.72/21,968.96
  6. Step 6: Final answer
    x = 27,956.60

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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.