Home / 13,075.80-19,581.30-8,388.60

Finding the Fourth Proportional to 13,075.80, 19,581.30 and 8,388.60

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Solution

The fourth proportional to 13,075.80, 19,581.30 and 8,388.60 is: 12,562.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.80 : 19,581.30 = 8,388.60 : x
  2. Step 2: Convert to fraction form
    13,075.80/19,581.30 = 8,388.60/x
  3. Step 3: Cross multiply
    13,075.80x = 19,581.30 × 8,388.60
  4. Step 4: Simplify right side
    13,075.80x = 164,259,693.18
  5. Step 5: Solve for x
    x = 164,259,693.18/13,075.80
  6. Step 6: Final answer
    x = 12,562.11

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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.