Home / 39,875.09-55,027.62-21,969.92

Finding the Fourth Proportional to 39,875.09, 55,027.62 and 21,969.92

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Solution

The fourth proportional to 39,875.09, 55,027.62 and 21,969.92 is: 30,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.09 : 55,027.62 = 21,969.92 : x
  2. Step 2: Convert to fraction form
    39,875.09/55,027.62 = 21,969.92/x
  3. Step 3: Cross multiply
    39,875.09x = 55,027.62 × 21,969.92
  4. Step 4: Simplify right side
    39,875.09x = 1,208,952,546.76
  5. Step 5: Solve for x
    x = 1,208,952,546.76/39,875.09
  6. Step 6: Final answer
    x = 30,318.49

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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.