Home / 28,220.56-38,926.76-18,162.12

Finding the Fourth Proportional to 28,220.56, 38,926.76 and 18,162.12

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Solution

The fourth proportional to 28,220.56, 38,926.76 and 18,162.12 is: 25,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.56 : 38,926.76 = 18,162.12 : x
  2. Step 2: Convert to fraction form
    28,220.56/38,926.76 = 18,162.12/x
  3. Step 3: Cross multiply
    28,220.56x = 38,926.76 × 18,162.12
  4. Step 4: Simplify right side
    28,220.56x = 706,992,486.33
  5. Step 5: Solve for x
    x = 706,992,486.33/28,220.56
  6. Step 6: Final answer
    x = 25,052.39

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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.