Home / 20,892.78-28,827.63-13,334.31

Finding the Fourth Proportional to 20,892.78, 28,827.63 and 13,334.31

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Solution

The fourth proportional to 20,892.78, 28,827.63 and 13,334.31 is: 18,398.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.78 : 28,827.63 = 13,334.31 : x
  2. Step 2: Convert to fraction form
    20,892.78/28,827.63 = 13,334.31/x
  3. Step 3: Cross multiply
    20,892.78x = 28,827.63 × 13,334.31
  4. Step 4: Simplify right side
    20,892.78x = 384,396,554.99
  5. Step 5: Solve for x
    x = 384,396,554.99/20,892.78
  6. Step 6: Final answer
    x = 18,398.54

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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.