Home / 36,029.12-49,719.76-20,921.76

Finding the Fourth Proportional to 36,029.12, 49,719.76 and 20,921.76

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Solution

The fourth proportional to 36,029.12, 49,719.76 and 20,921.76 is: 28,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,029.12 : 49,719.76 = 20,921.76 : x
  2. Step 2: Convert to fraction form
    36,029.12/49,719.76 = 20,921.76/x
  3. Step 3: Cross multiply
    36,029.12x = 49,719.76 × 20,921.76
  4. Step 4: Simplify right side
    36,029.12x = 1,040,224,885.98
  5. Step 5: Solve for x
    x = 1,040,224,885.98/36,029.12
  6. Step 6: Final answer
    x = 28,871.78

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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.