Home / 21,021.02-31,530.84-8,537.35

Finding the Fourth Proportional to 21,021.02, 31,530.84 and 8,537.35

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Solution

The fourth proportional to 21,021.02, 31,530.84 and 8,537.35 is: 12,805.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.02 : 31,530.84 = 8,537.35 : x
  2. Step 2: Convert to fraction form
    21,021.02/31,530.84 = 8,537.35/x
  3. Step 3: Cross multiply
    21,021.02x = 31,530.84 × 8,537.35
  4. Step 4: Simplify right side
    21,021.02x = 269,189,837.19
  5. Step 5: Solve for x
    x = 269,189,837.19/21,021.02
  6. Step 6: Final answer
    x = 12,805.75

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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.