Home / 12,965.49-19,451.32-4,200.40

Finding the Fourth Proportional to 12,965.49, 19,451.32 and 4,200.40

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Solution

The fourth proportional to 12,965.49, 19,451.32 and 4,200.40 is: 6,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.49 : 19,451.32 = 4,200.40 : x
  2. Step 2: Convert to fraction form
    12,965.49/19,451.32 = 4,200.40/x
  3. Step 3: Cross multiply
    12,965.49x = 19,451.32 × 4,200.40
  4. Step 4: Simplify right side
    12,965.49x = 81,703,324.53
  5. Step 5: Solve for x
    x = 81,703,324.53/12,965.49
  6. Step 6: Final answer
    x = 6,301.60

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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.