Home / 38,643.40-57,975.90-18,922.60

Finding the Fourth Proportional to 38,643.40, 57,975.90 and 18,922.60

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Solution

The fourth proportional to 38,643.40, 57,975.90 and 18,922.60 is: 28,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,643.40 : 57,975.90 = 18,922.60 : x
  2. Step 2: Convert to fraction form
    38,643.40/57,975.90 = 18,922.60/x
  3. Step 3: Cross multiply
    38,643.40x = 57,975.90 × 18,922.60
  4. Step 4: Simplify right side
    38,643.40x = 1,097,054,765.34
  5. Step 5: Solve for x
    x = 1,097,054,765.34/38,643.40
  6. Step 6: Final answer
    x = 28,389.19

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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.