Home / 13,620-18,783.12-8,834.96

Finding the Fourth Proportional to 13,620, 18,783.12 and 8,834.96

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Solution

The fourth proportional to 13,620, 18,783.12 and 8,834.96 is: 12,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620 : 18,783.12 = 8,834.96 : x
  2. Step 2: Convert to fraction form
    13,620/18,783.12 = 8,834.96/x
  3. Step 3: Cross multiply
    13,620x = 18,783.12 × 8,834.96
  4. Step 4: Simplify right side
    13,620x = 165,948,113.88
  5. Step 5: Solve for x
    x = 165,948,113.88/13,620
  6. Step 6: Final answer
    x = 12,184.15

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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.