Home / 28,223.75-38,950.13-15,648.50

Finding the Fourth Proportional to 28,223.75, 38,950.13 and 15,648.50

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Solution

The fourth proportional to 28,223.75, 38,950.13 and 15,648.50 is: 21,595.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.75 : 38,950.13 = 15,648.50 : x
  2. Step 2: Convert to fraction form
    28,223.75/38,950.13 = 15,648.50/x
  3. Step 3: Cross multiply
    28,223.75x = 38,950.13 × 15,648.50
  4. Step 4: Simplify right side
    28,223.75x = 609,511,109.31
  5. Step 5: Solve for x
    x = 609,511,109.31/28,223.75
  6. Step 6: Final answer
    x = 21,595.68

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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.