Home / 39,361.60-54,317.36-21,456.16

Finding the Fourth Proportional to 39,361.60, 54,317.36 and 21,456.16

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Solution

The fourth proportional to 39,361.60, 54,317.36 and 21,456.16 is: 29,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,361.60 : 54,317.36 = 21,456.16 : x
  2. Step 2: Convert to fraction form
    39,361.60/54,317.36 = 21,456.16/x
  3. Step 3: Cross multiply
    39,361.60x = 54,317.36 × 21,456.16
  4. Step 4: Simplify right side
    39,361.60x = 1,165,441,966.94
  5. Step 5: Solve for x
    x = 1,165,441,966.94/39,361.60
  6. Step 6: Final answer
    x = 29,608.60

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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.