Home / 39,215.67-54,116.94-21,310.75

Finding the Fourth Proportional to 39,215.67, 54,116.94 and 21,310.75

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Solution

The fourth proportional to 39,215.67, 54,116.94 and 21,310.75 is: 29,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,215.67 : 54,116.94 = 21,310.75 : x
  2. Step 2: Convert to fraction form
    39,215.67/54,116.94 = 21,310.75/x
  3. Step 3: Cross multiply
    39,215.67x = 54,116.94 × 21,310.75
  4. Step 4: Simplify right side
    39,215.67x = 1,153,272,242.45
  5. Step 5: Solve for x
    x = 1,153,272,242.45/39,215.67
  6. Step 6: Final answer
    x = 29,408.46

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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.