Home / 28,788.48-39,726.72-16,217.28

Finding the Fourth Proportional to 28,788.48, 39,726.72 and 16,217.28

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Solution

The fourth proportional to 28,788.48, 39,726.72 and 16,217.28 is: 22,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,788.48 : 39,726.72 = 16,217.28 : x
  2. Step 2: Convert to fraction form
    28,788.48/39,726.72 = 16,217.28/x
  3. Step 3: Cross multiply
    28,788.48x = 39,726.72 × 16,217.28
  4. Step 4: Simplify right side
    28,788.48x = 644,259,341.72
  5. Step 5: Solve for x
    x = 644,259,341.72/28,788.48
  6. Step 6: Final answer
    x = 22,379.07

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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.