Home / 21,961.08-30,306.30-11,889.52

Finding the Fourth Proportional to 21,961.08, 30,306.30 and 11,889.52

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Solution

The fourth proportional to 21,961.08, 30,306.30 and 11,889.52 is: 16,407.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.08 : 30,306.30 = 11,889.52 : x
  2. Step 2: Convert to fraction form
    21,961.08/30,306.30 = 11,889.52/x
  3. Step 3: Cross multiply
    21,961.08x = 30,306.30 × 11,889.52
  4. Step 4: Simplify right side
    21,961.08x = 360,327,224.76
  5. Step 5: Solve for x
    x = 360,327,224.76/21,961.08
  6. Step 6: Final answer
    x = 16,407.54

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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.