Home / 28,842.18-39,743.09-21,276.51

Finding the Fourth Proportional to 28,842.18, 39,743.09 and 21,276.51

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Solution

The fourth proportional to 28,842.18, 39,743.09 and 21,276.51 is: 29,317.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,842.18 : 39,743.09 = 21,276.51 : x
  2. Step 2: Convert to fraction form
    28,842.18/39,743.09 = 21,276.51/x
  3. Step 3: Cross multiply
    28,842.18x = 39,743.09 × 21,276.51
  4. Step 4: Simplify right side
    28,842.18x = 845,594,076.18
  5. Step 5: Solve for x
    x = 845,594,076.18/28,842.18
  6. Step 6: Final answer
    x = 29,317.97

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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.