Home / 33,130.36-45,730.74-21,211.48

Finding the Fourth Proportional to 33,130.36, 45,730.74 and 21,211.48

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Solution

The fourth proportional to 33,130.36, 45,730.74 and 21,211.48 is: 29,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,130.36 : 45,730.74 = 21,211.48 : x
  2. Step 2: Convert to fraction form
    33,130.36/45,730.74 = 21,211.48/x
  3. Step 3: Cross multiply
    33,130.36x = 45,730.74 × 21,211.48
  4. Step 4: Simplify right side
    33,130.36x = 970,016,676.90
  5. Step 5: Solve for x
    x = 970,016,676.90/33,130.36
  6. Step 6: Final answer
    x = 29,278.78

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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.