Home / 28,379.48-42,569.21-13,180.52

Finding the Fourth Proportional to 28,379.48, 42,569.21 and 13,180.52

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Solution

The fourth proportional to 28,379.48, 42,569.21 and 13,180.52 is: 19,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.48 : 42,569.21 = 13,180.52 : x
  2. Step 2: Convert to fraction form
    28,379.48/42,569.21 = 13,180.52/x
  3. Step 3: Cross multiply
    28,379.48x = 42,569.21 × 13,180.52
  4. Step 4: Simplify right side
    28,379.48x = 561,084,463.16
  5. Step 5: Solve for x
    x = 561,084,463.16/28,379.48
  6. Step 6: Final answer
    x = 19,770.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.