Home / 13,643.88-20,456.75-5,324.67

Finding the Fourth Proportional to 13,643.88, 20,456.75 and 5,324.67

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Solution

The fourth proportional to 13,643.88, 20,456.75 and 5,324.67 is: 7,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.88 : 20,456.75 = 5,324.67 : x
  2. Step 2: Convert to fraction form
    13,643.88/20,456.75 = 5,324.67/x
  3. Step 3: Cross multiply
    13,643.88x = 20,456.75 × 5,324.67
  4. Step 4: Simplify right side
    13,643.88x = 108,925,456.33
  5. Step 5: Solve for x
    x = 108,925,456.33/13,643.88
  6. Step 6: Final answer
    x = 7,983.47

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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.