Home / 21,812.07-32,716.80-7,771.35

Finding the Fourth Proportional to 21,812.07, 32,716.80 and 7,771.35

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Solution

The fourth proportional to 21,812.07, 32,716.80 and 7,771.35 is: 11,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.07 : 32,716.80 = 7,771.35 : x
  2. Step 2: Convert to fraction form
    21,812.07/32,716.80 = 7,771.35/x
  3. Step 3: Cross multiply
    21,812.07x = 32,716.80 × 7,771.35
  4. Step 4: Simplify right side
    21,812.07x = 254,253,756.21
  5. Step 5: Solve for x
    x = 254,253,756.21/21,812.07
  6. Step 6: Final answer
    x = 11,656.56

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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.