Home / 35,518.23-49,016.79-20,415.78

Finding the Fourth Proportional to 35,518.23, 49,016.79 and 20,415.78

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Solution

The fourth proportional to 35,518.23, 49,016.79 and 20,415.78 is: 28,174.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,518.23 : 49,016.79 = 20,415.78 : x
  2. Step 2: Convert to fraction form
    35,518.23/49,016.79 = 20,415.78/x
  3. Step 3: Cross multiply
    35,518.23x = 49,016.79 × 20,415.78
  4. Step 4: Simplify right side
    35,518.23x = 1,000,716,000.95
  5. Step 5: Solve for x
    x = 1,000,716,000.95/35,518.23
  6. Step 6: Final answer
    x = 28,174.71

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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.