Home / 30,968.73-42,740.46-18,393.48

Finding the Fourth Proportional to 30,968.73, 42,740.46 and 18,393.48

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Solution

The fourth proportional to 30,968.73, 42,740.46 and 18,393.48 is: 25,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.73 : 42,740.46 = 18,393.48 : x
  2. Step 2: Convert to fraction form
    30,968.73/42,740.46 = 18,393.48/x
  3. Step 3: Cross multiply
    30,968.73x = 42,740.46 × 18,393.48
  4. Step 4: Simplify right side
    30,968.73x = 786,145,796.20
  5. Step 5: Solve for x
    x = 786,145,796.20/30,968.73
  6. Step 6: Final answer
    x = 25,385.15

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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.