Home / 21,160.07-29,201.04-11,728.63

Finding the Fourth Proportional to 21,160.07, 29,201.04 and 11,728.63

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Solution

The fourth proportional to 21,160.07, 29,201.04 and 11,728.63 is: 16,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.07 : 29,201.04 = 11,728.63 : x
  2. Step 2: Convert to fraction form
    21,160.07/29,201.04 = 11,728.63/x
  3. Step 3: Cross multiply
    21,160.07x = 29,201.04 × 11,728.63
  4. Step 4: Simplify right side
    21,160.07x = 342,488,047.77
  5. Step 5: Solve for x
    x = 342,488,047.77/21,160.07
  6. Step 6: Final answer
    x = 16,185.59

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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.