Home / 30,914.87-42,662.48-16,767.72

Finding the Fourth Proportional to 30,914.87, 42,662.48 and 16,767.72

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Solution

The fourth proportional to 30,914.87, 42,662.48 and 16,767.72 is: 23,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,914.87 : 42,662.48 = 16,767.72 : x
  2. Step 2: Convert to fraction form
    30,914.87/42,662.48 = 16,767.72/x
  3. Step 3: Cross multiply
    30,914.87x = 42,662.48 × 16,767.72
  4. Step 4: Simplify right side
    30,914.87x = 715,352,435.31
  5. Step 5: Solve for x
    x = 715,352,435.31/30,914.87
  6. Step 6: Final answer
    x = 23,139.43

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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.