Home / 21,220.24-31,806.36-10,810

Finding the Fourth Proportional to 21,220.24, 31,806.36 and 10,810

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Solution

The fourth proportional to 21,220.24, 31,806.36 and 10,810 is: 16,202.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.24 : 31,806.36 = 10,810 : x
  2. Step 2: Convert to fraction form
    21,220.24/31,806.36 = 10,810/x
  3. Step 3: Cross multiply
    21,220.24x = 31,806.36 × 10,810
  4. Step 4: Simplify right side
    21,220.24x = 343,826,751.60
  5. Step 5: Solve for x
    x = 343,826,751.60/21,220.24
  6. Step 6: Final answer
    x = 16,202.77

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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.