Home / 39,778.98-59,664.60-13,480.62

Finding the Fourth Proportional to 39,778.98, 59,664.60 and 13,480.62

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Solution

The fourth proportional to 39,778.98, 59,664.60 and 13,480.62 is: 20,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.98 : 59,664.60 = 13,480.62 : x
  2. Step 2: Convert to fraction form
    39,778.98/59,664.60 = 13,480.62/x
  3. Step 3: Cross multiply
    39,778.98x = 59,664.60 × 13,480.62
  4. Step 4: Simplify right side
    39,778.98x = 804,315,800.05
  5. Step 5: Solve for x
    x = 804,315,800.05/39,778.98
  6. Step 6: Final answer
    x = 20,219.62

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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.