Home / 13,316.24-18,370.32-7,724

Finding the Fourth Proportional to 13,316.24, 18,370.32 and 7,724

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Solution

The fourth proportional to 13,316.24, 18,370.32 and 7,724 is: 10,655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.24 : 18,370.32 = 7,724 : x
  2. Step 2: Convert to fraction form
    13,316.24/18,370.32 = 7,724/x
  3. Step 3: Cross multiply
    13,316.24x = 18,370.32 × 7,724
  4. Step 4: Simplify right side
    13,316.24x = 141,892,351.68
  5. Step 5: Solve for x
    x = 141,892,351.68/13,316.24
  6. Step 6: Final answer
    x = 10,655.59

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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.