Home / 21,926.40-30,266.88-16,620.80

Finding the Fourth Proportional to 21,926.40, 30,266.88 and 16,620.80

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Solution

The fourth proportional to 21,926.40, 30,266.88 and 16,620.80 is: 22,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,926.40 : 30,266.88 = 16,620.80 : x
  2. Step 2: Convert to fraction form
    21,926.40/30,266.88 = 16,620.80/x
  3. Step 3: Cross multiply
    21,926.40x = 30,266.88 × 16,620.80
  4. Step 4: Simplify right side
    21,926.40x = 503,059,759.10
  5. Step 5: Solve for x
    x = 503,059,759.10/21,926.40
  6. Step 6: Final answer
    x = 22,943.11

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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.