Home / 27,977.28-38,640.60-19,009.80

Finding the Fourth Proportional to 27,977.28, 38,640.60 and 19,009.80

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Solution

The fourth proportional to 27,977.28, 38,640.60 and 19,009.80 is: 26,255.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.28 : 38,640.60 = 19,009.80 : x
  2. Step 2: Convert to fraction form
    27,977.28/38,640.60 = 19,009.80/x
  3. Step 3: Cross multiply
    27,977.28x = 38,640.60 × 19,009.80
  4. Step 4: Simplify right side
    27,977.28x = 734,550,077.88
  5. Step 5: Solve for x
    x = 734,550,077.88/27,977.28
  6. Step 6: Final answer
    x = 26,255.24

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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.