Home / 21,150.29-29,187.44-11,718.84

Finding the Fourth Proportional to 21,150.29, 29,187.44 and 11,718.84

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Solution

The fourth proportional to 21,150.29, 29,187.44 and 11,718.84 is: 16,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.29 : 29,187.44 = 11,718.84 : x
  2. Step 2: Convert to fraction form
    21,150.29/29,187.44 = 11,718.84/x
  3. Step 3: Cross multiply
    21,150.29x = 29,187.44 × 11,718.84
  4. Step 4: Simplify right side
    21,150.29x = 342,042,880.78
  5. Step 5: Solve for x
    x = 342,042,880.78/21,150.29
  6. Step 6: Final answer
    x = 16,172.02

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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.