Home / 28,836.06-39,734.71-21,270.40

Finding the Fourth Proportional to 28,836.06, 39,734.71 and 21,270.40

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Solution

The fourth proportional to 28,836.06, 39,734.71 and 21,270.40 is: 29,309.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,836.06 : 39,734.71 = 21,270.40 : x
  2. Step 2: Convert to fraction form
    28,836.06/39,734.71 = 21,270.40/x
  3. Step 3: Cross multiply
    28,836.06x = 39,734.71 × 21,270.40
  4. Step 4: Simplify right side
    28,836.06x = 845,173,175.58
  5. Step 5: Solve for x
    x = 845,173,175.58/28,836.06
  6. Step 6: Final answer
    x = 29,309.59

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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.