Home / 21,948.20-30,288.30-11,876.42

Finding the Fourth Proportional to 21,948.20, 30,288.30 and 11,876.42

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Solution

The fourth proportional to 21,948.20, 30,288.30 and 11,876.42 is: 16,389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.20 : 30,288.30 = 11,876.42 : x
  2. Step 2: Convert to fraction form
    21,948.20/30,288.30 = 11,876.42/x
  3. Step 3: Cross multiply
    21,948.20x = 30,288.30 × 11,876.42
  4. Step 4: Simplify right side
    21,948.20x = 359,716,571.89
  5. Step 5: Solve for x
    x = 359,716,571.89/21,948.20
  6. Step 6: Final answer
    x = 16,389.34

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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.