Home / 39,218.94-54,122.55-21,313.94

Finding the Fourth Proportional to 39,218.94, 54,122.55 and 21,313.94

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Solution

The fourth proportional to 39,218.94, 54,122.55 and 21,313.94 is: 29,413.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.94 : 54,122.55 = 21,313.94 : x
  2. Step 2: Convert to fraction form
    39,218.94/54,122.55 = 21,313.94/x
  3. Step 3: Cross multiply
    39,218.94x = 54,122.55 × 21,313.94
  4. Step 4: Simplify right side
    39,218.94x = 1,153,564,676.78
  5. Step 5: Solve for x
    x = 1,153,564,676.78/39,218.94
  6. Step 6: Final answer
    x = 29,413.46

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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.