Home / 39,125.89-53,993.75-21,220.83

Finding the Fourth Proportional to 39,125.89, 53,993.75 and 21,220.83

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Solution

The fourth proportional to 39,125.89, 53,993.75 and 21,220.83 is: 29,284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,125.89 : 53,993.75 = 21,220.83 : x
  2. Step 2: Convert to fraction form
    39,125.89/53,993.75 = 21,220.83/x
  3. Step 3: Cross multiply
    39,125.89x = 53,993.75 × 21,220.83
  4. Step 4: Simplify right side
    39,125.89x = 1,145,792,189.81
  5. Step 5: Solve for x
    x = 1,145,792,189.81/39,125.89
  6. Step 6: Final answer
    x = 29,284.76

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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.