Home / 20,763.36-31,107.60-11,393.28

Finding the Fourth Proportional to 20,763.36, 31,107.60 and 11,393.28

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Solution

The fourth proportional to 20,763.36, 31,107.60 and 11,393.28 is: 17,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.36 : 31,107.60 = 11,393.28 : x
  2. Step 2: Convert to fraction form
    20,763.36/31,107.60 = 11,393.28/x
  3. Step 3: Cross multiply
    20,763.36x = 31,107.60 × 11,393.28
  4. Step 4: Simplify right side
    20,763.36x = 354,417,596.93
  5. Step 5: Solve for x
    x = 354,417,596.93/20,763.36
  6. Step 6: Final answer
    x = 17,069.38

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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.