Home / 27,451.78-37,859.00-21,403.51

Finding the Fourth Proportional to 27,451.78, 37,859.00 and 21,403.51

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Solution

The fourth proportional to 27,451.78, 37,859.00 and 21,403.51 is: 29,517.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,451.78 : 37,859.00 = 21,403.51 : x
  2. Step 2: Convert to fraction form
    27,451.78/37,859.00 = 21,403.51/x
  3. Step 3: Cross multiply
    27,451.78x = 37,859.00 × 21,403.51
  4. Step 4: Simplify right side
    27,451.78x = 810,315,283.42
  5. Step 5: Solve for x
    x = 810,315,283.42/27,451.78
  6. Step 6: Final answer
    x = 29,517.77

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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.