Home / 39,231.51-54,138.35-21,326.06

Finding the Fourth Proportional to 39,231.51, 54,138.35 and 21,326.06

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Solution

The fourth proportional to 39,231.51, 54,138.35 and 21,326.06 is: 29,429.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,231.51 : 54,138.35 = 21,326.06 : x
  2. Step 2: Convert to fraction form
    39,231.51/54,138.35 = 21,326.06/x
  3. Step 3: Cross multiply
    39,231.51x = 54,138.35 × 21,326.06
  4. Step 4: Simplify right side
    39,231.51x = 1,154,557,323.08
  5. Step 5: Solve for x
    x = 1,154,557,323.08/39,231.51
  6. Step 6: Final answer
    x = 29,429.34

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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.