Home / 13,281.37-18,327.57-7,311.90

Finding the Fourth Proportional to 13,281.37, 18,327.57 and 7,311.90

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Solution

The fourth proportional to 13,281.37, 18,327.57 and 7,311.90 is: 10,090.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.37 : 18,327.57 = 7,311.90 : x
  2. Step 2: Convert to fraction form
    13,281.37/18,327.57 = 7,311.90/x
  3. Step 3: Cross multiply
    13,281.37x = 18,327.57 × 7,311.90
  4. Step 4: Simplify right side
    13,281.37x = 134,009,400.39
  5. Step 5: Solve for x
    x = 134,009,400.39/13,281.37
  6. Step 6: Final answer
    x = 10,090.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.