Home / 12,839.89-19,259.77-4,075.49

Finding the Fourth Proportional to 12,839.89, 19,259.77 and 4,075.49

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Solution

The fourth proportional to 12,839.89, 19,259.77 and 4,075.49 is: 6,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.89 : 19,259.77 = 4,075.49 : x
  2. Step 2: Convert to fraction form
    12,839.89/19,259.77 = 4,075.49/x
  3. Step 3: Cross multiply
    12,839.89x = 19,259.77 × 4,075.49
  4. Step 4: Simplify right side
    12,839.89x = 78,493,000.04
  5. Step 5: Solve for x
    x = 78,493,000.04/12,839.89
  6. Step 6: Final answer
    x = 6,113.21

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1.5x scale

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.