Home / 21,321.72-31,986.36-10,248.48

Finding the Fourth Proportional to 21,321.72, 31,986.36 and 10,248.48

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Solution

The fourth proportional to 21,321.72, 31,986.36 and 10,248.48 is: 15,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.72 : 31,986.36 = 10,248.48 : x
  2. Step 2: Convert to fraction form
    21,321.72/31,986.36 = 10,248.48/x
  3. Step 3: Cross multiply
    21,321.72x = 31,986.36 × 10,248.48
  4. Step 4: Simplify right side
    21,321.72x = 327,811,570.73
  5. Step 5: Solve for x
    x = 327,811,570.73/21,321.72
  6. Step 6: Final answer
    x = 15,374.54

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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.