Home / 13,990.37-20,963.49-8,354.22

Finding the Fourth Proportional to 13,990.37, 20,963.49 and 8,354.22

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Solution

The fourth proportional to 13,990.37, 20,963.49 and 8,354.22 is: 12,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.37 : 20,963.49 = 8,354.22 : x
  2. Step 2: Convert to fraction form
    13,990.37/20,963.49 = 8,354.22/x
  3. Step 3: Cross multiply
    13,990.37x = 20,963.49 × 8,354.22
  4. Step 4: Simplify right side
    13,990.37x = 175,133,607.43
  5. Step 5: Solve for x
    x = 175,133,607.43/13,990.37
  6. Step 6: Final answer
    x = 12,518.15

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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.