Home / 28,075.86-42,078.60-14,039.82

Finding the Fourth Proportional to 28,075.86, 42,078.60 and 14,039.82

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Solution

The fourth proportional to 28,075.86, 42,078.60 and 14,039.82 is: 21,042.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.86 : 42,078.60 = 14,039.82 : x
  2. Step 2: Convert to fraction form
    28,075.86/42,078.60 = 14,039.82/x
  3. Step 3: Cross multiply
    28,075.86x = 42,078.60 × 14,039.82
  4. Step 4: Simplify right side
    28,075.86x = 590,775,969.85
  5. Step 5: Solve for x
    x = 590,775,969.85/28,075.86
  6. Step 6: Final answer
    x = 21,042.13

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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.