Home / 30,986.16-42,759.96-16,839.02

Finding the Fourth Proportional to 30,986.16, 42,759.96 and 16,839.02

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Solution

The fourth proportional to 30,986.16, 42,759.96 and 16,839.02 is: 23,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.16 : 42,759.96 = 16,839.02 : x
  2. Step 2: Convert to fraction form
    30,986.16/42,759.96 = 16,839.02/x
  3. Step 3: Cross multiply
    30,986.16x = 42,759.96 × 16,839.02
  4. Step 4: Simplify right side
    30,986.16x = 720,035,821.64
  5. Step 5: Solve for x
    x = 720,035,821.64/30,986.16
  6. Step 6: Final answer
    x = 23,237.34

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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.