Home / 12,894.40-19,344.30-5,103.28

Finding the Fourth Proportional to 12,894.40, 19,344.30 and 5,103.28

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Solution

The fourth proportional to 12,894.40, 19,344.30 and 5,103.28 is: 7,655.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894.40 : 19,344.30 = 5,103.28 : x
  2. Step 2: Convert to fraction form
    12,894.40/19,344.30 = 5,103.28/x
  3. Step 3: Cross multiply
    12,894.40x = 19,344.30 × 5,103.28
  4. Step 4: Simplify right side
    12,894.40x = 98,719,379.30
  5. Step 5: Solve for x
    x = 98,719,379.30/12,894.40
  6. Step 6: Final answer
    x = 7,655.99

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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.