Home / 21,986.40-32,988.24-13,227.60

Finding the Fourth Proportional to 21,986.40, 32,988.24 and 13,227.60

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Solution

The fourth proportional to 21,986.40, 32,988.24 and 13,227.60 is: 19,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.40 : 32,988.24 = 13,227.60 : x
  2. Step 2: Convert to fraction form
    21,986.40/32,988.24 = 13,227.60/x
  3. Step 3: Cross multiply
    21,986.40x = 32,988.24 × 13,227.60
  4. Step 4: Simplify right side
    21,986.40x = 436,355,243.42
  5. Step 5: Solve for x
    x = 436,355,243.42/21,986.40
  6. Step 6: Final answer
    x = 19,846.60

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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.