Home / 12,571.93-18,850.89-5,181.40

Finding the Fourth Proportional to 12,571.93, 18,850.89 and 5,181.40

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Solution

The fourth proportional to 12,571.93, 18,850.89 and 5,181.40 is: 7,769.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.93 : 18,850.89 = 5,181.40 : x
  2. Step 2: Convert to fraction form
    12,571.93/18,850.89 = 5,181.40/x
  3. Step 3: Cross multiply
    12,571.93x = 18,850.89 × 5,181.40
  4. Step 4: Simplify right side
    12,571.93x = 97,674,001.45
  5. Step 5: Solve for x
    x = 97,674,001.45/12,571.93
  6. Step 6: Final answer
    x = 7,769.21

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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.