Home / 38,535.73-53,178.63-21,540.31

Finding the Fourth Proportional to 38,535.73, 53,178.63 and 21,540.31

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Solution

The fourth proportional to 38,535.73, 53,178.63 and 21,540.31 is: 29,725.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,535.73 : 53,178.63 = 21,540.31 : x
  2. Step 2: Convert to fraction form
    38,535.73/53,178.63 = 21,540.31/x
  3. Step 3: Cross multiply
    38,535.73x = 53,178.63 × 21,540.31
  4. Step 4: Simplify right side
    38,535.73x = 1,145,484,175.58
  5. Step 5: Solve for x
    x = 1,145,484,175.58/38,535.73
  6. Step 6: Final answer
    x = 29,725.25

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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.