Home / 13,309.56-18,361.26-7,717.32

Finding the Fourth Proportional to 13,309.56, 18,361.26 and 7,717.32

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Solution

The fourth proportional to 13,309.56, 18,361.26 and 7,717.32 is: 10,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.56 : 18,361.26 = 7,717.32 : x
  2. Step 2: Convert to fraction form
    13,309.56/18,361.26 = 7,717.32/x
  3. Step 3: Cross multiply
    13,309.56x = 18,361.26 × 7,717.32
  4. Step 4: Simplify right side
    13,309.56x = 141,699,719.02
  5. Step 5: Solve for x
    x = 141,699,719.02/13,309.56
  6. Step 6: Final answer
    x = 10,646.46

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Why These Related Problems?

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