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Finding the Fourth Proportional to 21,922.20, 30,652.20 and 21,922.20

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Solution

The fourth proportional to 21,922.20, 30,652.20 and 21,922.20 is: 30,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922.20 : 30,652.20 = 21,922.20 : x
  2. Step 2: Convert to fraction form
    21,922.20/30,652.20 = 21,922.20/x
  3. Step 3: Cross multiply
    21,922.20x = 30,652.20 × 21,922.20
  4. Step 4: Simplify right side
    21,922.20x = 671,963,658.84
  5. Step 5: Solve for x
    x = 671,963,658.84/21,922.20
  6. Step 6: Final answer
    x = 30,652.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.