Home / 27,638.08-38,141.58-15,703.44

Finding the Fourth Proportional to 27,638.08, 38,141.58 and 15,703.44

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Solution

The fourth proportional to 27,638.08, 38,141.58 and 15,703.44 is: 21,671.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.08 : 38,141.58 = 15,703.44 : x
  2. Step 2: Convert to fraction form
    27,638.08/38,141.58 = 15,703.44/x
  3. Step 3: Cross multiply
    27,638.08x = 38,141.58 × 15,703.44
  4. Step 4: Simplify right side
    27,638.08x = 598,954,143.44
  5. Step 5: Solve for x
    x = 598,954,143.44/27,638.08
  6. Step 6: Final answer
    x = 21,671.33

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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.