Home / 12,071.48-18,112.21-5,313.60

Finding the Fourth Proportional to 12,071.48, 18,112.21 and 5,313.60

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Solution

The fourth proportional to 12,071.48, 18,112.21 and 5,313.60 is: 7,972.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071.48 : 18,112.21 = 5,313.60 : x
  2. Step 2: Convert to fraction form
    12,071.48/18,112.21 = 5,313.60/x
  3. Step 3: Cross multiply
    12,071.48x = 18,112.21 × 5,313.60
  4. Step 4: Simplify right side
    12,071.48x = 96,241,025.77
  5. Step 5: Solve for x
    x = 96,241,025.77/12,071.48
  6. Step 6: Final answer
    x = 7,972.59

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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.