Home / 28,020.75-38,669.46-15,446.31

Finding the Fourth Proportional to 28,020.75, 38,669.46 and 15,446.31

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Solution

The fourth proportional to 28,020.75, 38,669.46 and 15,446.31 is: 21,316.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.75 : 38,669.46 = 15,446.31 : x
  2. Step 2: Convert to fraction form
    28,020.75/38,669.46 = 15,446.31/x
  3. Step 3: Cross multiply
    28,020.75x = 38,669.46 × 15,446.31
  4. Step 4: Simplify right side
    28,020.75x = 597,300,466.69
  5. Step 5: Solve for x
    x = 597,300,466.69/28,020.75
  6. Step 6: Final answer
    x = 21,316.36

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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.