Home / 28,437.80-42,660-11,795.72

Finding the Fourth Proportional to 28,437.80, 42,660 and 11,795.72

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Solution

The fourth proportional to 28,437.80, 42,660 and 11,795.72 is: 17,694.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.80 : 42,660 = 11,795.72 : x
  2. Step 2: Convert to fraction form
    28,437.80/42,660 = 11,795.72/x
  3. Step 3: Cross multiply
    28,437.80x = 42,660 × 11,795.72
  4. Step 4: Simplify right side
    28,437.80x = 503,205,201.90
  5. Step 5: Solve for x
    x = 503,205,201.90/28,437.80
  6. Step 6: Final answer
    x = 17,694.94

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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.