Home / 13,385.58-20,090.82-6,816.68

Finding the Fourth Proportional to 13,385.58, 20,090.82 and 6,816.68

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Solution

The fourth proportional to 13,385.58, 20,090.82 and 6,816.68 is: 10,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.58 : 20,090.82 = 6,816.68 : x
  2. Step 2: Convert to fraction form
    13,385.58/20,090.82 = 6,816.68/x
  3. Step 3: Cross multiply
    13,385.58x = 20,090.82 × 6,816.68
  4. Step 4: Simplify right side
    13,385.58x = 136,952,590.42
  5. Step 5: Solve for x
    x = 136,952,590.42/13,385.58
  6. Step 6: Final answer
    x = 10,231.35

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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.