Home / 27,883.78-38,479.26-15,308.53

Finding the Fourth Proportional to 27,883.78, 38,479.26 and 15,308.53

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Solution

The fourth proportional to 27,883.78, 38,479.26 and 15,308.53 is: 21,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,883.78 : 38,479.26 = 15,308.53 : x
  2. Step 2: Convert to fraction form
    27,883.78/38,479.26 = 15,308.53/x
  3. Step 3: Cross multiply
    27,883.78x = 38,479.26 × 15,308.53
  4. Step 4: Simplify right side
    27,883.78x = 589,060,906.09
  5. Step 5: Solve for x
    x = 589,060,906.09/27,883.78
  6. Step 6: Final answer
    x = 21,125.58

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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.