Home / 30,669.40-46,004.10-20,171.80

Finding the Fourth Proportional to 30,669.40, 46,004.10 and 20,171.80

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Solution

The fourth proportional to 30,669.40, 46,004.10 and 20,171.80 is: 30,257.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,669.40 : 46,004.10 = 20,171.80 : x
  2. Step 2: Convert to fraction form
    30,669.40/46,004.10 = 20,171.80/x
  3. Step 3: Cross multiply
    30,669.40x = 46,004.10 × 20,171.80
  4. Step 4: Simplify right side
    30,669.40x = 927,985,504.38
  5. Step 5: Solve for x
    x = 927,985,504.38/30,669.40
  6. Step 6: Final answer
    x = 30,257.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.