Home / 13,803.18-20,704.32-8,219.15

Finding the Fourth Proportional to 13,803.18, 20,704.32 and 8,219.15

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Solution

The fourth proportional to 13,803.18, 20,704.32 and 8,219.15 is: 12,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.18 : 20,704.32 = 8,219.15 : x
  2. Step 2: Convert to fraction form
    13,803.18/20,704.32 = 8,219.15/x
  3. Step 3: Cross multiply
    13,803.18x = 20,704.32 × 8,219.15
  4. Step 4: Simplify right side
    13,803.18x = 170,171,808.21
  5. Step 5: Solve for x
    x = 170,171,808.21/13,803.18
  6. Step 6: Final answer
    x = 12,328.45

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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.