Home / 21,351.53-29,478.97-19,109.52

Finding the Fourth Proportional to 21,351.53, 29,478.97 and 19,109.52

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Solution

The fourth proportional to 21,351.53, 29,478.97 and 19,109.52 is: 26,383.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.53 : 29,478.97 = 19,109.52 : x
  2. Step 2: Convert to fraction form
    21,351.53/29,478.97 = 19,109.52/x
  3. Step 3: Cross multiply
    21,351.53x = 29,478.97 × 19,109.52
  4. Step 4: Simplify right side
    21,351.53x = 563,328,990.68
  5. Step 5: Solve for x
    x = 563,328,990.68/21,351.53
  6. Step 6: Final answer
    x = 26,383.54

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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.