Home / 39,771.72-54,885.34-21,866.84

Finding the Fourth Proportional to 39,771.72, 54,885.34 and 21,866.84

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Solution

The fourth proportional to 39,771.72, 54,885.34 and 21,866.84 is: 30,176.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,771.72 : 54,885.34 = 21,866.84 : x
  2. Step 2: Convert to fraction form
    39,771.72/54,885.34 = 21,866.84/x
  3. Step 3: Cross multiply
    39,771.72x = 54,885.34 × 21,866.84
  4. Step 4: Simplify right side
    39,771.72x = 1,200,168,948.13
  5. Step 5: Solve for x
    x = 1,200,168,948.13/39,771.72
  6. Step 6: Final answer
    x = 30,176.44

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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.