Home / 20,858.31-31,232.79-14,297.31

Finding the Fourth Proportional to 20,858.31, 31,232.79 and 14,297.31

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Solution

The fourth proportional to 20,858.31, 31,232.79 and 14,297.31 is: 21,408.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.31 : 31,232.79 = 14,297.31 : x
  2. Step 2: Convert to fraction form
    20,858.31/31,232.79 = 14,297.31/x
  3. Step 3: Cross multiply
    20,858.31x = 31,232.79 × 14,297.31
  4. Step 4: Simplify right side
    20,858.31x = 446,544,880.79
  5. Step 5: Solve for x
    x = 446,544,880.79/20,858.31
  6. Step 6: Final answer
    x = 21,408.49

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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.