Home / 30,694.08-42,385.52-19,383.60

Finding the Fourth Proportional to 30,694.08, 42,385.52 and 19,383.60

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Solution

The fourth proportional to 30,694.08, 42,385.52 and 19,383.60 is: 26,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,694.08 : 42,385.52 = 19,383.60 : x
  2. Step 2: Convert to fraction form
    30,694.08/42,385.52 = 19,383.60/x
  3. Step 3: Cross multiply
    30,694.08x = 42,385.52 × 19,383.60
  4. Step 4: Simplify right side
    30,694.08x = 821,583,965.47
  5. Step 5: Solve for x
    x = 821,583,965.47/30,694.08
  6. Step 6: Final answer
    x = 26,766.85

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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.