Home / 21,054.34-31,554.24-8,559.75

Finding the Fourth Proportional to 21,054.34, 31,554.24 and 8,559.75

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Solution

The fourth proportional to 21,054.34, 31,554.24 and 8,559.75 is: 12,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.34 : 31,554.24 = 8,559.75 : x
  2. Step 2: Convert to fraction form
    21,054.34/31,554.24 = 8,559.75/x
  3. Step 3: Cross multiply
    21,054.34x = 31,554.24 × 8,559.75
  4. Step 4: Simplify right side
    21,054.34x = 270,096,405.84
  5. Step 5: Solve for x
    x = 270,096,405.84/21,054.34
  6. Step 6: Final answer
    x = 12,828.54

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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.