Home / 20,963.96-31,418.16-15,391.26

Finding the Fourth Proportional to 20,963.96, 31,418.16 and 15,391.26

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Solution

The fourth proportional to 20,963.96, 31,418.16 and 15,391.26 is: 23,066.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.96 : 31,418.16 = 15,391.26 : x
  2. Step 2: Convert to fraction form
    20,963.96/31,418.16 = 15,391.26/x
  3. Step 3: Cross multiply
    20,963.96x = 31,418.16 × 15,391.26
  4. Step 4: Simplify right side
    20,963.96x = 483,565,069.28
  5. Step 5: Solve for x
    x = 483,565,069.28/20,963.96
  6. Step 6: Final answer
    x = 23,066.49

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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.