Home / 30,963.50-42,729.84-16,816.34

Finding the Fourth Proportional to 30,963.50, 42,729.84 and 16,816.34

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Solution

The fourth proportional to 30,963.50, 42,729.84 and 16,816.34 is: 23,206.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.50 : 42,729.84 = 16,816.34 : x
  2. Step 2: Convert to fraction form
    30,963.50/42,729.84 = 16,816.34/x
  3. Step 3: Cross multiply
    30,963.50x = 42,729.84 × 16,816.34
  4. Step 4: Simplify right side
    30,963.50x = 718,559,517.59
  5. Step 5: Solve for x
    x = 718,559,517.59/30,963.50
  6. Step 6: Final answer
    x = 23,206.66

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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.