Home / 20,905.24-31,297.38-13,967.32

Finding the Fourth Proportional to 20,905.24, 31,297.38 and 13,967.32

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Solution

The fourth proportional to 20,905.24, 31,297.38 and 13,967.32 is: 20,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.24 : 31,297.38 = 13,967.32 : x
  2. Step 2: Convert to fraction form
    20,905.24/31,297.38 = 13,967.32/x
  3. Step 3: Cross multiply
    20,905.24x = 31,297.38 × 13,967.32
  4. Step 4: Simplify right side
    20,905.24x = 437,140,521.62
  5. Step 5: Solve for x
    x = 437,140,521.62/20,905.24
  6. Step 6: Final answer
    x = 20,910.57

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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.