Home / 27,081.81-40,629.20-13,721.49

Finding the Fourth Proportional to 27,081.81, 40,629.20 and 13,721.49

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Solution

The fourth proportional to 27,081.81, 40,629.20 and 13,721.49 is: 20,585.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,081.81 : 40,629.20 = 13,721.49 : x
  2. Step 2: Convert to fraction form
    27,081.81/40,629.20 = 13,721.49/x
  3. Step 3: Cross multiply
    27,081.81x = 40,629.20 × 13,721.49
  4. Step 4: Simplify right side
    27,081.81x = 557,493,161.51
  5. Step 5: Solve for x
    x = 557,493,161.51/27,081.81
  6. Step 6: Final answer
    x = 20,585.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.