Home / 21,631.77-29,851.79-12,200.33

Finding the Fourth Proportional to 21,631.77, 29,851.79 and 12,200.33

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Solution

The fourth proportional to 21,631.77, 29,851.79 and 12,200.33 is: 16,836.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.77 : 29,851.79 = 12,200.33 : x
  2. Step 2: Convert to fraction form
    21,631.77/29,851.79 = 12,200.33/x
  3. Step 3: Cross multiply
    21,631.77x = 29,851.79 × 12,200.33
  4. Step 4: Simplify right side
    21,631.77x = 364,201,478.83
  5. Step 5: Solve for x
    x = 364,201,478.83/21,631.77
  6. Step 6: Final answer
    x = 16,836.42

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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.