Home / 30,805.58-42,512.31-17,374.20

Finding the Fourth Proportional to 30,805.58, 42,512.31 and 17,374.20

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Solution

The fourth proportional to 30,805.58, 42,512.31 and 17,374.20 is: 23,976.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805.58 : 42,512.31 = 17,374.20 : x
  2. Step 2: Convert to fraction form
    30,805.58/42,512.31 = 17,374.20/x
  3. Step 3: Cross multiply
    30,805.58x = 42,512.31 × 17,374.20
  4. Step 4: Simplify right side
    30,805.58x = 738,617,376.40
  5. Step 5: Solve for x
    x = 738,617,376.40/30,805.58
  6. Step 6: Final answer
    x = 23,976.74

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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.