Home / 21,766.84-30,036.96-12,335.20

Finding the Fourth Proportional to 21,766.84, 30,036.96 and 12,335.20

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Solution

The fourth proportional to 21,766.84, 30,036.96 and 12,335.20 is: 17,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.84 : 30,036.96 = 12,335.20 : x
  2. Step 2: Convert to fraction form
    21,766.84/30,036.96 = 12,335.20/x
  3. Step 3: Cross multiply
    21,766.84x = 30,036.96 × 12,335.20
  4. Step 4: Simplify right side
    21,766.84x = 370,511,908.99
  5. Step 5: Solve for x
    x = 370,511,908.99/21,766.84
  6. Step 6: Final answer
    x = 17,021.85

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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.