Home / 30,986.97-42,762.47-16,839.82

Finding the Fourth Proportional to 30,986.97, 42,762.47 and 16,839.82

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Solution

The fourth proportional to 30,986.97, 42,762.47 and 16,839.82 is: 23,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.97 : 42,762.47 = 16,839.82 : x
  2. Step 2: Convert to fraction form
    30,986.97/42,762.47 = 16,839.82/x
  3. Step 3: Cross multiply
    30,986.97x = 42,762.47 × 16,839.82
  4. Step 4: Simplify right side
    30,986.97x = 720,112,297.56
  5. Step 5: Solve for x
    x = 720,112,297.56/30,986.97
  6. Step 6: Final answer
    x = 23,239.20

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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.