Home / 13,690.96-20,521.44-5,368.48

Finding the Fourth Proportional to 13,690.96, 20,521.44 and 5,368.48

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Solution

The fourth proportional to 13,690.96, 20,521.44 and 5,368.48 is: 8,046.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.96 : 20,521.44 = 5,368.48 : x
  2. Step 2: Convert to fraction form
    13,690.96/20,521.44 = 5,368.48/x
  3. Step 3: Cross multiply
    13,690.96x = 20,521.44 × 5,368.48
  4. Step 4: Simplify right side
    13,690.96x = 110,168,940.21
  5. Step 5: Solve for x
    x = 110,168,940.21/13,690.96
  6. Step 6: Final answer
    x = 8,046.84

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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.