Home / 39,212.96-54,113.92-21,308.16

Finding the Fourth Proportional to 39,212.96, 54,113.92 and 21,308.16

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Solution

The fourth proportional to 39,212.96, 54,113.92 and 21,308.16 is: 29,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212.96 : 54,113.92 = 21,308.16 : x
  2. Step 2: Convert to fraction form
    39,212.96/54,113.92 = 21,308.16/x
  3. Step 3: Cross multiply
    39,212.96x = 54,113.92 × 21,308.16
  4. Step 4: Simplify right side
    39,212.96x = 1,153,068,065.59
  5. Step 5: Solve for x
    x = 1,153,068,065.59/39,212.96
  6. Step 6: Final answer
    x = 29,405.28

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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.