Home / 27,789.58-38,351.75-15,853.18

Finding the Fourth Proportional to 27,789.58, 38,351.75 and 15,853.18

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Solution

The fourth proportional to 27,789.58, 38,351.75 and 15,853.18 is: 21,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.58 : 38,351.75 = 15,853.18 : x
  2. Step 2: Convert to fraction form
    27,789.58/38,351.75 = 15,853.18/x
  3. Step 3: Cross multiply
    27,789.58x = 38,351.75 × 15,853.18
  4. Step 4: Simplify right side
    27,789.58x = 607,997,196.07
  5. Step 5: Solve for x
    x = 607,997,196.07/27,789.58
  6. Step 6: Final answer
    x = 21,878.60

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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.