Home / 27,878.27-38,471.92-15,131.45

Finding the Fourth Proportional to 27,878.27, 38,471.92 and 15,131.45

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Solution

The fourth proportional to 27,878.27, 38,471.92 and 15,131.45 is: 20,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.27 : 38,471.92 = 15,131.45 : x
  2. Step 2: Convert to fraction form
    27,878.27/38,471.92 = 15,131.45/x
  3. Step 3: Cross multiply
    27,878.27x = 38,471.92 × 15,131.45
  4. Step 4: Simplify right side
    27,878.27x = 582,136,021.41
  5. Step 5: Solve for x
    x = 582,136,021.41/27,878.27
  6. Step 6: Final answer
    x = 20,881.35

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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.