Home / 21,480.66-32,270.40-15,255.81

Finding the Fourth Proportional to 21,480.66, 32,270.40 and 15,255.81

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Solution

The fourth proportional to 21,480.66, 32,270.40 and 15,255.81 is: 22,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.66 : 32,270.40 = 15,255.81 : x
  2. Step 2: Convert to fraction form
    21,480.66/32,270.40 = 15,255.81/x
  3. Step 3: Cross multiply
    21,480.66x = 32,270.40 × 15,255.81
  4. Step 4: Simplify right side
    21,480.66x = 492,311,091.02
  5. Step 5: Solve for x
    x = 492,311,091.02/21,480.66
  6. Step 6: Final answer
    x = 22,918.81

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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.