Home / 12,774.89-19,163.28-5,380.13

Finding the Fourth Proportional to 12,774.89, 19,163.28 and 5,380.13

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Solution

The fourth proportional to 12,774.89, 19,163.28 and 5,380.13 is: 8,070.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.89 : 19,163.28 = 5,380.13 : x
  2. Step 2: Convert to fraction form
    12,774.89/19,163.28 = 5,380.13/x
  3. Step 3: Cross multiply
    12,774.89x = 19,163.28 × 5,380.13
  4. Step 4: Simplify right side
    12,774.89x = 103,100,937.63
  5. Step 5: Solve for x
    x = 103,100,937.63/12,774.89
  6. Step 6: Final answer
    x = 8,070.59

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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.