Home / 30,963.80-42,729.90-16,816.52

Finding the Fourth Proportional to 30,963.80, 42,729.90 and 16,816.52

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Solution

The fourth proportional to 30,963.80, 42,729.90 and 16,816.52 is: 23,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.80 : 42,729.90 = 16,816.52 : x
  2. Step 2: Convert to fraction form
    30,963.80/42,729.90 = 16,816.52/x
  3. Step 3: Cross multiply
    30,963.80x = 42,729.90 × 16,816.52
  4. Step 4: Simplify right side
    30,963.80x = 718,568,217.95
  5. Step 5: Solve for x
    x = 718,568,217.95/30,963.80
  6. Step 6: Final answer
    x = 23,206.72

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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.