Home / 13,615.40-20,418.30-4,850.60

Finding the Fourth Proportional to 13,615.40, 20,418.30 and 4,850.60

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Solution

The fourth proportional to 13,615.40, 20,418.30 and 4,850.60 is: 7,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.40 : 20,418.30 = 4,850.60 : x
  2. Step 2: Convert to fraction form
    13,615.40/20,418.30 = 4,850.60/x
  3. Step 3: Cross multiply
    13,615.40x = 20,418.30 × 4,850.60
  4. Step 4: Simplify right side
    13,615.40x = 99,041,005.98
  5. Step 5: Solve for x
    x = 99,041,005.98/13,615.40
  6. Step 6: Final answer
    x = 7,274.19

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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.