Home / 30,963.44-42,729.20-16,816.40

Finding the Fourth Proportional to 30,963.44, 42,729.20 and 16,816.40

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Solution

The fourth proportional to 30,963.44, 42,729.20 and 16,816.40 is: 23,206.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.44 : 42,729.20 = 16,816.40 : x
  2. Step 2: Convert to fraction form
    30,963.44/42,729.20 = 16,816.40/x
  3. Step 3: Cross multiply
    30,963.44x = 42,729.20 × 16,816.40
  4. Step 4: Simplify right side
    30,963.44x = 718,551,318.88
  5. Step 5: Solve for x
    x = 718,551,318.88/30,963.44
  6. Step 6: Final answer
    x = 23,206.44

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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.