Home / 21,765.38-30,036.83-12,334.55

Finding the Fourth Proportional to 21,765.38, 30,036.83 and 12,334.55

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Solution

The fourth proportional to 21,765.38, 30,036.83 and 12,334.55 is: 17,022.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.38 : 30,036.83 = 12,334.55 : x
  2. Step 2: Convert to fraction form
    21,765.38/30,036.83 = 12,334.55/x
  3. Step 3: Cross multiply
    21,765.38x = 30,036.83 × 12,334.55
  4. Step 4: Simplify right side
    21,765.38x = 370,490,569.62
  5. Step 5: Solve for x
    x = 370,490,569.62/21,765.38
  6. Step 6: Final answer
    x = 17,022.02

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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.