Home / 30,549.03-42,157.31-17,120.25

Finding the Fourth Proportional to 30,549.03, 42,157.31 and 17,120.25

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Solution

The fourth proportional to 30,549.03, 42,157.31 and 17,120.25 is: 23,625.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,549.03 : 42,157.31 = 17,120.25 : x
  2. Step 2: Convert to fraction form
    30,549.03/42,157.31 = 17,120.25/x
  3. Step 3: Cross multiply
    30,549.03x = 42,157.31 × 17,120.25
  4. Step 4: Simplify right side
    30,549.03x = 721,743,600.93
  5. Step 5: Solve for x
    x = 721,743,600.93/30,549.03
  6. Step 6: Final answer
    x = 23,625.75

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Double scale
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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.