Home / 28,092.75-38,768-15,518.31

Finding the Fourth Proportional to 28,092.75, 38,768 and 15,518.31

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Solution

The fourth proportional to 28,092.75, 38,768 and 15,518.31 is: 21,415.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.75 : 38,768 = 15,518.31 : x
  2. Step 2: Convert to fraction form
    28,092.75/38,768 = 15,518.31/x
  3. Step 3: Cross multiply
    28,092.75x = 38,768 × 15,518.31
  4. Step 4: Simplify right side
    28,092.75x = 601,613,842.08
  5. Step 5: Solve for x
    x = 601,613,842.08/28,092.75
  6. Step 6: Final answer
    x = 21,415.27

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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.