Home / 13,518.90-20,282.94-8,328.42

Finding the Fourth Proportional to 13,518.90, 20,282.94 and 8,328.42

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Solution

The fourth proportional to 13,518.90, 20,282.94 and 8,328.42 is: 12,495.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.90 : 20,282.94 = 8,328.42 : x
  2. Step 2: Convert to fraction form
    13,518.90/20,282.94 = 8,328.42/x
  3. Step 3: Cross multiply
    13,518.90x = 20,282.94 × 8,328.42
  4. Step 4: Simplify right side
    13,518.90x = 168,924,843.15
  5. Step 5: Solve for x
    x = 168,924,843.15/13,518.90
  6. Step 6: Final answer
    x = 12,495.46

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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.