Home / 30,741.90-42,414.63-18,792.66

Finding the Fourth Proportional to 30,741.90, 42,414.63 and 18,792.66

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Solution

The fourth proportional to 30,741.90, 42,414.63 and 18,792.66 is: 25,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,741.90 : 42,414.63 = 18,792.66 : x
  2. Step 2: Convert to fraction form
    30,741.90/42,414.63 = 18,792.66/x
  3. Step 3: Cross multiply
    30,741.90x = 42,414.63 × 18,792.66
  4. Step 4: Simplify right side
    30,741.90x = 797,083,720.62
  5. Step 5: Solve for x
    x = 797,083,720.62/30,741.90
  6. Step 6: Final answer
    x = 25,928.25

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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.