Home / 39,361.15-54,317.30-21,456.50

Finding the Fourth Proportional to 39,361.15, 54,317.30 and 21,456.50

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Solution

The fourth proportional to 39,361.15, 54,317.30 and 21,456.50 is: 29,609.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,361.15 : 54,317.30 = 21,456.50 : x
  2. Step 2: Convert to fraction form
    39,361.15/54,317.30 = 21,456.50/x
  3. Step 3: Cross multiply
    39,361.15x = 54,317.30 × 21,456.50
  4. Step 4: Simplify right side
    39,361.15x = 1,165,459,040.17
  5. Step 5: Solve for x
    x = 1,165,459,040.17/39,361.15
  6. Step 6: Final answer
    x = 29,609.38

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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.