Home / 38,736.12-53,455.86-21,969.12

Finding the Fourth Proportional to 38,736.12, 53,455.86 and 21,969.12

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Solution

The fourth proportional to 38,736.12, 53,455.86 and 21,969.12 is: 30,317.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,736.12 : 53,455.86 = 21,969.12 : x
  2. Step 2: Convert to fraction form
    38,736.12/53,455.86 = 21,969.12/x
  3. Step 3: Cross multiply
    38,736.12x = 53,455.86 × 21,969.12
  4. Step 4: Simplify right side
    38,736.12x = 1,174,378,203.04
  5. Step 5: Solve for x
    x = 1,174,378,203.04/38,736.12
  6. Step 6: Final answer
    x = 30,317.39

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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.