Home / 30,766.94-42,458.40-16,619.78

Finding the Fourth Proportional to 30,766.94, 42,458.40 and 16,619.78

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Solution

The fourth proportional to 30,766.94, 42,458.40 and 16,619.78 is: 22,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,766.94 : 42,458.40 = 16,619.78 : x
  2. Step 2: Convert to fraction form
    30,766.94/42,458.40 = 16,619.78/x
  3. Step 3: Cross multiply
    30,766.94x = 42,458.40 × 16,619.78
  4. Step 4: Simplify right side
    30,766.94x = 705,649,267.15
  5. Step 5: Solve for x
    x = 705,649,267.15/30,766.94
  6. Step 6: Final answer
    x = 22,935.31

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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.