Home / 21,280.16-29,243.26-20,304.48

Finding the Fourth Proportional to 21,280.16, 29,243.26 and 20,304.48

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Solution

The fourth proportional to 21,280.16, 29,243.26 and 20,304.48 is: 27,902.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.16 : 29,243.26 = 20,304.48 : x
  2. Step 2: Convert to fraction form
    21,280.16/29,243.26 = 20,304.48/x
  3. Step 3: Cross multiply
    21,280.16x = 29,243.26 × 20,304.48
  4. Step 4: Simplify right side
    21,280.16x = 593,769,187.80
  5. Step 5: Solve for x
    x = 593,769,187.80/21,280.16
  6. Step 6: Final answer
    x = 27,902.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.