Home / 30,879.96-42,615.81-17,451.78

Finding the Fourth Proportional to 30,879.96, 42,615.81 and 17,451.78

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Solution

The fourth proportional to 30,879.96, 42,615.81 and 17,451.78 is: 24,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.96 : 42,615.81 = 17,451.78 : x
  2. Step 2: Convert to fraction form
    30,879.96/42,615.81 = 17,451.78/x
  3. Step 3: Cross multiply
    30,879.96x = 42,615.81 × 17,451.78
  4. Step 4: Simplify right side
    30,879.96x = 743,721,740.64
  5. Step 5: Solve for x
    x = 743,721,740.64/30,879.96
  6. Step 6: Final answer
    x = 24,084.28

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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.