Home / 39,771.98-54,885.20-21,866.93

Finding the Fourth Proportional to 39,771.98, 54,885.20 and 21,866.93

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Solution

The fourth proportional to 39,771.98, 54,885.20 and 21,866.93 is: 30,176.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,771.98 : 54,885.20 = 21,866.93 : x
  2. Step 2: Convert to fraction form
    39,771.98/54,885.20 = 21,866.93/x
  3. Step 3: Cross multiply
    39,771.98x = 54,885.20 × 21,866.93
  4. Step 4: Simplify right side
    39,771.98x = 1,200,170,648.49
  5. Step 5: Solve for x
    x = 1,200,170,648.49/39,771.98
  6. Step 6: Final answer
    x = 30,176.29

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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.