Home / 21,798.75-30,082.28-11,862.75

Finding the Fourth Proportional to 21,798.75, 30,082.28 and 11,862.75

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Solution

The fourth proportional to 21,798.75, 30,082.28 and 11,862.75 is: 16,370.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,798.75 : 30,082.28 = 11,862.75 : x
  2. Step 2: Convert to fraction form
    21,798.75/30,082.28 = 11,862.75/x
  3. Step 3: Cross multiply
    21,798.75x = 30,082.28 × 11,862.75
  4. Step 4: Simplify right side
    21,798.75x = 356,858,507.76
  5. Step 5: Solve for x
    x = 356,858,507.76/21,798.75
  6. Step 6: Final answer
    x = 16,370.60

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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.