Home / 28,860-39,826.80-16,284.48

Finding the Fourth Proportional to 28,860, 39,826.80 and 16,284.48

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Solution

The fourth proportional to 28,860, 39,826.80 and 16,284.48 is: 22,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860 : 39,826.80 = 16,284.48 : x
  2. Step 2: Convert to fraction form
    28,860/39,826.80 = 16,284.48/x
  3. Step 3: Cross multiply
    28,860x = 39,826.80 × 16,284.48
  4. Step 4: Simplify right side
    28,860x = 648,558,728.06
  5. Step 5: Solve for x
    x = 648,558,728.06/28,860
  6. Step 6: Final answer
    x = 22,472.58

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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.