Home / 18,128.19-27,192.60-4,980.48

Finding the Fourth Proportional to 18,128.19, 27,192.60 and 4,980.48

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Solution

The fourth proportional to 18,128.19, 27,192.60 and 4,980.48 is: 7,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.19 : 27,192.60 = 4,980.48 : x
  2. Step 2: Convert to fraction form
    18,128.19/27,192.60 = 4,980.48/x
  3. Step 3: Cross multiply
    18,128.19x = 27,192.60 × 4,980.48
  4. Step 4: Simplify right side
    18,128.19x = 135,432,200.45
  5. Step 5: Solve for x
    x = 135,432,200.45/18,128.19
  6. Step 6: Final answer
    x = 7,470.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.