Home / 12,840.84-19,261.38-4,075.80

Finding the Fourth Proportional to 12,840.84, 19,261.38 and 4,075.80

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Solution

The fourth proportional to 12,840.84, 19,261.38 and 4,075.80 is: 6,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.84 : 19,261.38 = 4,075.80 : x
  2. Step 2: Convert to fraction form
    12,840.84/19,261.38 = 4,075.80/x
  3. Step 3: Cross multiply
    12,840.84x = 19,261.38 × 4,075.80
  4. Step 4: Simplify right side
    12,840.84x = 78,505,532.60
  5. Step 5: Solve for x
    x = 78,505,532.60/12,840.84
  6. Step 6: Final answer
    x = 6,113.74

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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.