Home / 30,647.30-42,291.66-17,219.12

Finding the Fourth Proportional to 30,647.30, 42,291.66 and 17,219.12

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Solution

The fourth proportional to 30,647.30, 42,291.66 and 17,219.12 is: 23,761.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.30 : 42,291.66 = 17,219.12 : x
  2. Step 2: Convert to fraction form
    30,647.30/42,291.66 = 17,219.12/x
  3. Step 3: Cross multiply
    30,647.30x = 42,291.66 × 17,219.12
  4. Step 4: Simplify right side
    30,647.30x = 728,225,168.54
  5. Step 5: Solve for x
    x = 728,225,168.54/30,647.30
  6. Step 6: Final answer
    x = 23,761.48

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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.