Home / 15,447.98-21,318.36-8,374.42

Finding the Fourth Proportional to 15,447.98, 21,318.36 and 8,374.42

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Solution

The fourth proportional to 15,447.98, 21,318.36 and 8,374.42 is: 11,556.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.98 : 21,318.36 = 8,374.42 : x
  2. Step 2: Convert to fraction form
    15,447.98/21,318.36 = 8,374.42/x
  3. Step 3: Cross multiply
    15,447.98x = 21,318.36 × 8,374.42
  4. Step 4: Simplify right side
    15,447.98x = 178,528,895.60
  5. Step 5: Solve for x
    x = 178,528,895.60/15,447.98
  6. Step 6: Final answer
    x = 11,556.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.