Home / 30,511.20-42,103.42-17,080.19

Finding the Fourth Proportional to 30,511.20, 42,103.42 and 17,080.19

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Solution

The fourth proportional to 30,511.20, 42,103.42 and 17,080.19 is: 23,569.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.20 : 42,103.42 = 17,080.19 : x
  2. Step 2: Convert to fraction form
    30,511.20/42,103.42 = 17,080.19/x
  3. Step 3: Cross multiply
    30,511.20x = 42,103.42 × 17,080.19
  4. Step 4: Simplify right side
    30,511.20x = 719,134,413.25
  5. Step 5: Solve for x
    x = 719,134,413.25/30,511.20
  6. Step 6: Final answer
    x = 23,569.52

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Double scale
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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.