Home / 29,279.78-40,406.09-15,851.03

Finding the Fourth Proportional to 29,279.78, 40,406.09 and 15,851.03

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Solution

The fourth proportional to 29,279.78, 40,406.09 and 15,851.03 is: 21,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.78 : 40,406.09 = 15,851.03 : x
  2. Step 2: Convert to fraction form
    29,279.78/40,406.09 = 15,851.03/x
  3. Step 3: Cross multiply
    29,279.78x = 40,406.09 × 15,851.03
  4. Step 4: Simplify right side
    29,279.78x = 640,478,144.77
  5. Step 5: Solve for x
    x = 640,478,144.77/29,279.78
  6. Step 6: Final answer
    x = 21,874.42

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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.