Home / 21,721.51-32,571.33-10,611.55

Finding the Fourth Proportional to 21,721.51, 32,571.33 and 10,611.55

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Solution

The fourth proportional to 21,721.51, 32,571.33 and 10,611.55 is: 15,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,721.51 : 32,571.33 = 10,611.55 : x
  2. Step 2: Convert to fraction form
    21,721.51/32,571.33 = 10,611.55/x
  3. Step 3: Cross multiply
    21,721.51x = 32,571.33 × 10,611.55
  4. Step 4: Simplify right side
    21,721.51x = 345,632,296.86
  5. Step 5: Solve for x
    x = 345,632,296.86/21,721.51
  6. Step 6: Final answer
    x = 15,911.98

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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.