Home / 30,986.32-42,761.04-16,839.16

Finding the Fourth Proportional to 30,986.32, 42,761.04 and 16,839.16

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Solution

The fourth proportional to 30,986.32, 42,761.04 and 16,839.16 is: 23,238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.32 : 42,761.04 = 16,839.16 : x
  2. Step 2: Convert to fraction form
    30,986.32/42,761.04 = 16,839.16/x
  3. Step 3: Cross multiply
    30,986.32x = 42,761.04 × 16,839.16
  4. Step 4: Simplify right side
    30,986.32x = 720,059,994.33
  5. Step 5: Solve for x
    x = 720,059,994.33/30,986.32
  6. Step 6: Final answer
    x = 23,238.00

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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.