Home / 39,399.06-54,370.19-21,493.69

Finding the Fourth Proportional to 39,399.06, 54,370.19 and 21,493.69

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Solution

The fourth proportional to 39,399.06, 54,370.19 and 21,493.69 is: 29,661.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399.06 : 54,370.19 = 21,493.69 : x
  2. Step 2: Convert to fraction form
    39,399.06/54,370.19 = 21,493.69/x
  3. Step 3: Cross multiply
    39,399.06x = 54,370.19 × 21,493.69
  4. Step 4: Simplify right side
    39,399.06x = 1,168,615,926.91
  5. Step 5: Solve for x
    x = 1,168,615,926.91/39,399.06
  6. Step 6: Final answer
    x = 29,661.01

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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.