Home / 21,622.90-29,839.57-12,191.46

Finding the Fourth Proportional to 21,622.90, 29,839.57 and 12,191.46

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Solution

The fourth proportional to 21,622.90, 29,839.57 and 12,191.46 is: 16,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.90 : 29,839.57 = 12,191.46 : x
  2. Step 2: Convert to fraction form
    21,622.90/29,839.57 = 12,191.46/x
  3. Step 3: Cross multiply
    21,622.90x = 29,839.57 × 12,191.46
  4. Step 4: Simplify right side
    21,622.90x = 363,788,018.12
  5. Step 5: Solve for x
    x = 363,788,018.12/21,622.90
  6. Step 6: Final answer
    x = 16,824.20

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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.