Home / 39,021.96-53,850.36-21,117

Finding the Fourth Proportional to 39,021.96, 53,850.36 and 21,117

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Solution

The fourth proportional to 39,021.96, 53,850.36 and 21,117 is: 29,141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,021.96 : 53,850.36 = 21,117 : x
  2. Step 2: Convert to fraction form
    39,021.96/53,850.36 = 21,117/x
  3. Step 3: Cross multiply
    39,021.96x = 53,850.36 × 21,117
  4. Step 4: Simplify right side
    39,021.96x = 1,137,158,052.12
  5. Step 5: Solve for x
    x = 1,137,158,052.12/39,021.96
  6. Step 6: Final answer
    x = 29,141.49

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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.