Home / 27,877.15-38,470.75-15,130.44

Finding the Fourth Proportional to 27,877.15, 38,470.75 and 15,130.44

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Solution

The fourth proportional to 27,877.15, 38,470.75 and 15,130.44 is: 20,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,877.15 : 38,470.75 = 15,130.44 : x
  2. Step 2: Convert to fraction form
    27,877.15/38,470.75 = 15,130.44/x
  3. Step 3: Cross multiply
    27,877.15x = 38,470.75 × 15,130.44
  4. Step 4: Simplify right side
    27,877.15x = 582,079,336.80
  5. Step 5: Solve for x
    x = 582,079,336.80/27,877.15
  6. Step 6: Final answer
    x = 20,880.16

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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.