Home / 28,365.66-39,145.56-15,619.82

Finding the Fourth Proportional to 28,365.66, 39,145.56 and 15,619.82

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Solution

The fourth proportional to 28,365.66, 39,145.56 and 15,619.82 is: 21,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.66 : 39,145.56 = 15,619.82 : x
  2. Step 2: Convert to fraction form
    28,365.66/39,145.56 = 15,619.82/x
  3. Step 3: Cross multiply
    28,365.66x = 39,145.56 × 15,619.82
  4. Step 4: Simplify right side
    28,365.66x = 611,446,601.00
  5. Step 5: Solve for x
    x = 611,446,601.00/28,365.66
  6. Step 6: Final answer
    x = 21,555.87

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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.