Home / 15,219.09-20,985.25-9,834.44

Finding the Fourth Proportional to 15,219.09, 20,985.25 and 9,834.44

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Solution

The fourth proportional to 15,219.09, 20,985.25 and 9,834.44 is: 13,560.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.09 : 20,985.25 = 9,834.44 : x
  2. Step 2: Convert to fraction form
    15,219.09/20,985.25 = 9,834.44/x
  3. Step 3: Cross multiply
    15,219.09x = 20,985.25 × 9,834.44
  4. Step 4: Simplify right side
    15,219.09x = 206,378,157.62
  5. Step 5: Solve for x
    x = 206,378,157.62/15,219.09
  6. Step 6: Final answer
    x = 13,560.48

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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.