Home / 21,409.31-32,072.40-15,776.75

Finding the Fourth Proportional to 21,409.31, 32,072.40 and 15,776.75

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Solution

The fourth proportional to 21,409.31, 32,072.40 and 15,776.75 is: 23,634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.31 : 32,072.40 = 15,776.75 : x
  2. Step 2: Convert to fraction form
    21,409.31/32,072.40 = 15,776.75/x
  3. Step 3: Cross multiply
    21,409.31x = 32,072.40 × 15,776.75
  4. Step 4: Simplify right side
    21,409.31x = 505,998,197.26
  5. Step 5: Solve for x
    x = 505,998,197.26/21,409.31
  6. Step 6: Final answer
    x = 23,634.50

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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.