Home / 13,768.08-18,999.92-7,480.48

Finding the Fourth Proportional to 13,768.08, 18,999.92 and 7,480.48

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Solution

The fourth proportional to 13,768.08, 18,999.92 and 7,480.48 is: 10,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.08 : 18,999.92 = 7,480.48 : x
  2. Step 2: Convert to fraction form
    13,768.08/18,999.92 = 7,480.48/x
  3. Step 3: Cross multiply
    13,768.08x = 18,999.92 × 7,480.48
  4. Step 4: Simplify right side
    13,768.08x = 142,128,521.56
  5. Step 5: Solve for x
    x = 142,128,521.56/13,768.08
  6. Step 6: Final answer
    x = 10,323.05

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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.