Home / 21,085.77-31,644.07-15,554.03

Finding the Fourth Proportional to 21,085.77, 31,644.07 and 15,554.03

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Solution

The fourth proportional to 21,085.77, 31,644.07 and 15,554.03 is: 23,342.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.77 : 31,644.07 = 15,554.03 : x
  2. Step 2: Convert to fraction form
    21,085.77/31,644.07 = 15,554.03/x
  3. Step 3: Cross multiply
    21,085.77x = 31,644.07 × 15,554.03
  4. Step 4: Simplify right side
    21,085.77x = 492,192,617.00
  5. Step 5: Solve for x
    x = 492,192,617.00/21,085.77
  6. Step 6: Final answer
    x = 23,342.41

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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.