Home / 21,771.60-32,651.91-10,515.84

Finding the Fourth Proportional to 21,771.60, 32,651.91 and 10,515.84

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Solution

The fourth proportional to 21,771.60, 32,651.91 and 10,515.84 is: 15,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.60 : 32,651.91 = 10,515.84 : x
  2. Step 2: Convert to fraction form
    21,771.60/32,651.91 = 10,515.84/x
  3. Step 3: Cross multiply
    21,771.60x = 32,651.91 × 10,515.84
  4. Step 4: Simplify right side
    21,771.60x = 343,362,261.25
  5. Step 5: Solve for x
    x = 343,362,261.25/21,771.60
  6. Step 6: Final answer
    x = 15,771.11

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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.