Home / 21,168.15-29,211.62-11,736.51

Finding the Fourth Proportional to 21,168.15, 29,211.62 and 11,736.51

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Solution

The fourth proportional to 21,168.15, 29,211.62 and 11,736.51 is: 16,196.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.15 : 29,211.62 = 11,736.51 : x
  2. Step 2: Convert to fraction form
    21,168.15/29,211.62 = 11,736.51/x
  3. Step 3: Cross multiply
    21,168.15x = 29,211.62 × 11,736.51
  4. Step 4: Simplify right side
    21,168.15x = 342,842,411.56
  5. Step 5: Solve for x
    x = 342,842,411.56/21,168.15
  6. Step 6: Final answer
    x = 16,196.14

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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.