Home / 28,842.30-39,743.33-21,276.68

Finding the Fourth Proportional to 28,842.30, 39,743.33 and 21,276.68

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Solution

The fourth proportional to 28,842.30, 39,743.33 and 21,276.68 is: 29,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,842.30 : 39,743.33 = 21,276.68 : x
  2. Step 2: Convert to fraction form
    28,842.30/39,743.33 = 21,276.68/x
  3. Step 3: Cross multiply
    28,842.30x = 39,743.33 × 21,276.68
  4. Step 4: Simplify right side
    28,842.30x = 845,605,809.44
  5. Step 5: Solve for x
    x = 845,605,809.44/28,842.30
  6. Step 6: Final answer
    x = 29,318.25

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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.