Home / 21,268.00-29,351.54-12,315.66

Finding the Fourth Proportional to 21,268.00, 29,351.54 and 12,315.66

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Solution

The fourth proportional to 21,268.00, 29,351.54 and 12,315.66 is: 16,996.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.00 : 29,351.54 = 12,315.66 : x
  2. Step 2: Convert to fraction form
    21,268.00/29,351.54 = 12,315.66/x
  3. Step 3: Cross multiply
    21,268.00x = 29,351.54 × 12,315.66
  4. Step 4: Simplify right side
    21,268.00x = 361,483,525.54
  5. Step 5: Solve for x
    x = 361,483,525.54/21,268.00
  6. Step 6: Final answer
    x = 16,996.59

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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.