Home / 31,979.61-44,078.99-21,365.37

Finding the Fourth Proportional to 31,979.61, 44,078.99 and 21,365.37

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Solution

The fourth proportional to 31,979.61, 44,078.99 and 21,365.37 is: 29,448.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.61 : 44,078.99 = 21,365.37 : x
  2. Step 2: Convert to fraction form
    31,979.61/44,078.99 = 21,365.37/x
  3. Step 3: Cross multiply
    31,979.61x = 44,078.99 × 21,365.37
  4. Step 4: Simplify right side
    31,979.61x = 941,763,823.75
  5. Step 5: Solve for x
    x = 941,763,823.75/31,979.61
  6. Step 6: Final answer
    x = 29,448.88

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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.