Home / 21,500.76-29,671.26-11,940.84

Finding the Fourth Proportional to 21,500.76, 29,671.26 and 11,940.84

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Solution

The fourth proportional to 21,500.76, 29,671.26 and 11,940.84 is: 16,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.76 : 29,671.26 = 11,940.84 : x
  2. Step 2: Convert to fraction form
    21,500.76/29,671.26 = 11,940.84/x
  3. Step 3: Cross multiply
    21,500.76x = 29,671.26 × 11,940.84
  4. Step 4: Simplify right side
    21,500.76x = 354,299,768.26
  5. Step 5: Solve for x
    x = 354,299,768.26/21,500.76
  6. Step 6: Final answer
    x = 16,478.48

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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.