Home / 28,504.25-39,335.87-15,929

Finding the Fourth Proportional to 28,504.25, 39,335.87 and 15,929

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Solution

The fourth proportional to 28,504.25, 39,335.87 and 15,929 is: 21,982.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.25 : 39,335.87 = 15,929 : x
  2. Step 2: Convert to fraction form
    28,504.25/39,335.87 = 15,929/x
  3. Step 3: Cross multiply
    28,504.25x = 39,335.87 × 15,929
  4. Step 4: Simplify right side
    28,504.25x = 626,580,993.59
  5. Step 5: Solve for x
    x = 626,580,993.59/28,504.25
  6. Step 6: Final answer
    x = 21,982.02

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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.