Home / 28,626.86-39,507.36-15,881.30

Finding the Fourth Proportional to 28,626.86, 39,507.36 and 15,881.30

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Solution

The fourth proportional to 28,626.86, 39,507.36 and 15,881.30 is: 21,917.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,626.86 : 39,507.36 = 15,881.30 : x
  2. Step 2: Convert to fraction form
    28,626.86/39,507.36 = 15,881.30/x
  3. Step 3: Cross multiply
    28,626.86x = 39,507.36 × 15,881.30
  4. Step 4: Simplify right side
    28,626.86x = 627,428,236.37
  5. Step 5: Solve for x
    x = 627,428,236.37/28,626.86
  6. Step 6: Final answer
    x = 21,917.47

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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.