Home / 30,467.96-42,028.26-17,890.28

Finding the Fourth Proportional to 30,467.96, 42,028.26 and 17,890.28

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Solution

The fourth proportional to 30,467.96, 42,028.26 and 17,890.28 is: 24,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,467.96 : 42,028.26 = 17,890.28 : x
  2. Step 2: Convert to fraction form
    30,467.96/42,028.26 = 17,890.28/x
  3. Step 3: Cross multiply
    30,467.96x = 42,028.26 × 17,890.28
  4. Step 4: Simplify right side
    30,467.96x = 751,897,339.31
  5. Step 5: Solve for x
    x = 751,897,339.31/30,467.96
  6. Step 6: Final answer
    x = 24,678.30

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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.