Home / 21,163-29,205.95-11,731.56

Finding the Fourth Proportional to 21,163, 29,205.95 and 11,731.56

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Solution

The fourth proportional to 21,163, 29,205.95 and 11,731.56 is: 16,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163 : 29,205.95 = 11,731.56 : x
  2. Step 2: Convert to fraction form
    21,163/29,205.95 = 11,731.56/x
  3. Step 3: Cross multiply
    21,163x = 29,205.95 × 11,731.56
  4. Step 4: Simplify right side
    21,163x = 342,631,354.78
  5. Step 5: Solve for x
    x = 342,631,354.78/21,163
  6. Step 6: Final answer
    x = 16,190.11

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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.