Home / 28,977.11-43,474.98-13,187.78

Finding the Fourth Proportional to 28,977.11, 43,474.98 and 13,187.78

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Solution

The fourth proportional to 28,977.11, 43,474.98 and 13,187.78 is: 19,785.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.11 : 43,474.98 = 13,187.78 : x
  2. Step 2: Convert to fraction form
    28,977.11/43,474.98 = 13,187.78/x
  3. Step 3: Cross multiply
    28,977.11x = 43,474.98 × 13,187.78
  4. Step 4: Simplify right side
    28,977.11x = 573,338,254.37
  5. Step 5: Solve for x
    x = 573,338,254.37/28,977.11
  6. Step 6: Final answer
    x = 19,785.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.