Home / 21,201.89-29,255.20-12,250.58

Finding the Fourth Proportional to 21,201.89, 29,255.20 and 12,250.58

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Solution

The fourth proportional to 21,201.89, 29,255.20 and 12,250.58 is: 16,903.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.89 : 29,255.20 = 12,250.58 : x
  2. Step 2: Convert to fraction form
    21,201.89/29,255.20 = 12,250.58/x
  3. Step 3: Cross multiply
    21,201.89x = 29,255.20 × 12,250.58
  4. Step 4: Simplify right side
    21,201.89x = 358,393,106.76
  5. Step 5: Solve for x
    x = 358,393,106.76/21,201.89
  6. Step 6: Final answer
    x = 16,903.83

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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.