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Finding the Fourth Proportional to 12,858.37, 17,739.48 and 8,075.50

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Solution

The fourth proportional to 12,858.37, 17,739.48 and 8,075.50 is: 11,141.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.37 : 17,739.48 = 8,075.50 : x
  2. Step 2: Convert to fraction form
    12,858.37/17,739.48 = 8,075.50/x
  3. Step 3: Cross multiply
    12,858.37x = 17,739.48 × 8,075.50
  4. Step 4: Simplify right side
    12,858.37x = 143,255,170.74
  5. Step 5: Solve for x
    x = 143,255,170.74/12,858.37
  6. Step 6: Final answer
    x = 11,141.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.