Home / 12,860.87-19,302.26-5,075.15

Finding the Fourth Proportional to 12,860.87, 19,302.26 and 5,075.15

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Solution

The fourth proportional to 12,860.87, 19,302.26 and 5,075.15 is: 7,617.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.87 : 19,302.26 = 5,075.15 : x
  2. Step 2: Convert to fraction form
    12,860.87/19,302.26 = 5,075.15/x
  3. Step 3: Cross multiply
    12,860.87x = 19,302.26 × 5,075.15
  4. Step 4: Simplify right side
    12,860.87x = 97,961,742.95
  5. Step 5: Solve for x
    x = 97,961,742.95/12,860.87
  6. Step 6: Final answer
    x = 7,617.04

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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.