Home / 30,963.94-42,730.45-16,816.78

Finding the Fourth Proportional to 30,963.94, 42,730.45 and 16,816.78

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Solution

The fourth proportional to 30,963.94, 42,730.45 and 16,816.78 is: 23,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.94 : 42,730.45 = 16,816.78 : x
  2. Step 2: Convert to fraction form
    30,963.94/42,730.45 = 16,816.78/x
  3. Step 3: Cross multiply
    30,963.94x = 42,730.45 × 16,816.78
  4. Step 4: Simplify right side
    30,963.94x = 718,588,588.32
  5. Step 5: Solve for x
    x = 718,588,588.32/30,963.94
  6. Step 6: Final answer
    x = 23,207.27

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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.