Home / 28,704.80-42,996.64-13,135.52

Finding the Fourth Proportional to 28,704.80, 42,996.64 and 13,135.52

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Solution

The fourth proportional to 28,704.80, 42,996.64 and 13,135.52 is: 19,675.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,704.80 : 42,996.64 = 13,135.52 : x
  2. Step 2: Convert to fraction form
    28,704.80/42,996.64 = 13,135.52/x
  3. Step 3: Cross multiply
    28,704.80x = 42,996.64 × 13,135.52
  4. Step 4: Simplify right side
    28,704.80x = 564,783,224.65
  5. Step 5: Solve for x
    x = 564,783,224.65/28,704.80
  6. Step 6: Final answer
    x = 19,675.57

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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.