Home / 13,398.76-20,090.46-5,181.16

Finding the Fourth Proportional to 13,398.76, 20,090.46 and 5,181.16

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Solution

The fourth proportional to 13,398.76, 20,090.46 and 5,181.16 is: 7,768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.76 : 20,090.46 = 5,181.16 : x
  2. Step 2: Convert to fraction form
    13,398.76/20,090.46 = 5,181.16/x
  3. Step 3: Cross multiply
    13,398.76x = 20,090.46 × 5,181.16
  4. Step 4: Simplify right side
    13,398.76x = 104,091,887.73
  5. Step 5: Solve for x
    x = 104,091,887.73/13,398.76
  6. Step 6: Final answer
    x = 7,768.77

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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.