Home / 21,485.47-32,218.69-11,487.79

Finding the Fourth Proportional to 21,485.47, 32,218.69 and 11,487.79

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Solution

The fourth proportional to 21,485.47, 32,218.69 and 11,487.79 is: 17,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.47 : 32,218.69 = 11,487.79 : x
  2. Step 2: Convert to fraction form
    21,485.47/32,218.69 = 11,487.79/x
  3. Step 3: Cross multiply
    21,485.47x = 32,218.69 × 11,487.79
  4. Step 4: Simplify right side
    21,485.47x = 370,121,544.80
  5. Step 5: Solve for x
    x = 370,121,544.80/21,485.47
  6. Step 6: Final answer
    x = 17,226.60

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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.