Home / 18,220.30-25,091.07-15,829.18

Finding the Fourth Proportional to 18,220.30, 25,091.07 and 15,829.18

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Solution

The fourth proportional to 18,220.30, 25,091.07 and 15,829.18 is: 21,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.30 : 25,091.07 = 15,829.18 : x
  2. Step 2: Convert to fraction form
    18,220.30/25,091.07 = 15,829.18/x
  3. Step 3: Cross multiply
    18,220.30x = 25,091.07 × 15,829.18
  4. Step 4: Simplify right side
    18,220.30x = 397,171,000.69
  5. Step 5: Solve for x
    x = 397,171,000.69/18,220.30
  6. Step 6: Final answer
    x = 21,798.27

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1.5x scale

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.