Home / 13,181.08-19,771.50-5,384.40

Finding the Fourth Proportional to 13,181.08, 19,771.50 and 5,384.40

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Solution

The fourth proportional to 13,181.08, 19,771.50 and 5,384.40 is: 8,076.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.08 : 19,771.50 = 5,384.40 : x
  2. Step 2: Convert to fraction form
    13,181.08/19,771.50 = 5,384.40/x
  3. Step 3: Cross multiply
    13,181.08x = 19,771.50 × 5,384.40
  4. Step 4: Simplify right side
    13,181.08x = 106,457,664.60
  5. Step 5: Solve for x
    x = 106,457,664.60/13,181.08
  6. Step 6: Final answer
    x = 8,076.55

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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.