Home / 15,982.78-22,055.25-8,909.50

Finding the Fourth Proportional to 15,982.78, 22,055.25 and 8,909.50

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Solution

The fourth proportional to 15,982.78, 22,055.25 and 8,909.50 is: 12,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,982.78 : 22,055.25 = 8,909.50 : x
  2. Step 2: Convert to fraction form
    15,982.78/22,055.25 = 8,909.50/x
  3. Step 3: Cross multiply
    15,982.78x = 22,055.25 × 8,909.50
  4. Step 4: Simplify right side
    15,982.78x = 196,501,249.88
  5. Step 5: Solve for x
    x = 196,501,249.88/15,982.78
  6. Step 6: Final answer
    x = 12,294.56

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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.