Home / 12,840.98-19,261.20-4,075.70

Finding the Fourth Proportional to 12,840.98, 19,261.20 and 4,075.70

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Solution

The fourth proportional to 12,840.98, 19,261.20 and 4,075.70 is: 6,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.98 : 19,261.20 = 4,075.70 : x
  2. Step 2: Convert to fraction form
    12,840.98/19,261.20 = 4,075.70/x
  3. Step 3: Cross multiply
    12,840.98x = 19,261.20 × 4,075.70
  4. Step 4: Simplify right side
    12,840.98x = 78,502,872.84
  5. Step 5: Solve for x
    x = 78,502,872.84/12,840.98
  6. Step 6: Final answer
    x = 6,113.46

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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.