Home / 21,252.48-31,888.44-8,107.80

Finding the Fourth Proportional to 21,252.48, 31,888.44 and 8,107.80

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Solution

The fourth proportional to 21,252.48, 31,888.44 and 8,107.80 is: 12,165.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.48 : 31,888.44 = 8,107.80 : x
  2. Step 2: Convert to fraction form
    21,252.48/31,888.44 = 8,107.80/x
  3. Step 3: Cross multiply
    21,252.48x = 31,888.44 × 8,107.80
  4. Step 4: Simplify right side
    21,252.48x = 258,545,093.83
  5. Step 5: Solve for x
    x = 258,545,093.83/21,252.48
  6. Step 6: Final answer
    x = 12,165.41

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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.