Home / 21,132.75-31,710.06-10,744.50

Finding the Fourth Proportional to 21,132.75, 31,710.06 and 10,744.50

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Solution

The fourth proportional to 21,132.75, 31,710.06 and 10,744.50 is: 16,122.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.75 : 31,710.06 = 10,744.50 : x
  2. Step 2: Convert to fraction form
    21,132.75/31,710.06 = 10,744.50/x
  3. Step 3: Cross multiply
    21,132.75x = 31,710.06 × 10,744.50
  4. Step 4: Simplify right side
    21,132.75x = 340,708,739.67
  5. Step 5: Solve for x
    x = 340,708,739.67/21,132.75
  6. Step 6: Final answer
    x = 16,122.31

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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.