Home / 30,811.08-42,519.24-17,382.30

Finding the Fourth Proportional to 30,811.08, 42,519.24 and 17,382.30

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Solution

The fourth proportional to 30,811.08, 42,519.24 and 17,382.30 is: 23,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.08 : 42,519.24 = 17,382.30 : x
  2. Step 2: Convert to fraction form
    30,811.08/42,519.24 = 17,382.30/x
  3. Step 3: Cross multiply
    30,811.08x = 42,519.24 × 17,382.30
  4. Step 4: Simplify right side
    30,811.08x = 739,082,185.45
  5. Step 5: Solve for x
    x = 739,082,185.45/30,811.08
  6. Step 6: Final answer
    x = 23,987.55

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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.