Home / 38,940.90-53,738.40-21,035.91

Finding the Fourth Proportional to 38,940.90, 53,738.40 and 21,035.91

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Solution

The fourth proportional to 38,940.90, 53,738.40 and 21,035.91 is: 29,029.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,940.90 : 53,738.40 = 21,035.91 : x
  2. Step 2: Convert to fraction form
    38,940.90/53,738.40 = 21,035.91/x
  3. Step 3: Cross multiply
    38,940.90x = 53,738.40 × 21,035.91
  4. Step 4: Simplify right side
    38,940.90x = 1,130,436,145.94
  5. Step 5: Solve for x
    x = 1,130,436,145.94/38,940.90
  6. Step 6: Final answer
    x = 29,029.53

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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.