Home / 39,790.50-54,911.86-21,885.96

Finding the Fourth Proportional to 39,790.50, 54,911.86 and 21,885.96

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Solution

The fourth proportional to 39,790.50, 54,911.86 and 21,885.96 is: 30,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,790.50 : 54,911.86 = 21,885.96 : x
  2. Step 2: Convert to fraction form
    39,790.50/54,911.86 = 21,885.96/x
  3. Step 3: Cross multiply
    39,790.50x = 54,911.86 × 21,885.96
  4. Step 4: Simplify right side
    39,790.50x = 1,201,798,771.49
  5. Step 5: Solve for x
    x = 1,201,798,771.49/39,790.50
  6. Step 6: Final answer
    x = 30,203.16

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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.