Home / 30,640.61-42,284.21-17,212.43

Finding the Fourth Proportional to 30,640.61, 42,284.21 and 17,212.43

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Solution

The fourth proportional to 30,640.61, 42,284.21 and 17,212.43 is: 23,753.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.61 : 42,284.21 = 17,212.43 : x
  2. Step 2: Convert to fraction form
    30,640.61/42,284.21 = 17,212.43/x
  3. Step 3: Cross multiply
    30,640.61x = 42,284.21 × 17,212.43
  4. Step 4: Simplify right side
    30,640.61x = 727,813,707.25
  5. Step 5: Solve for x
    x = 727,813,707.25/30,640.61
  6. Step 6: Final answer
    x = 23,753.24

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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.