Home / 12,763.92-19,145.89-3,999.52

Finding the Fourth Proportional to 12,763.92, 19,145.89 and 3,999.52

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Solution

The fourth proportional to 12,763.92, 19,145.89 and 3,999.52 is: 5,999.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.92 : 19,145.89 = 3,999.52 : x
  2. Step 2: Convert to fraction form
    12,763.92/19,145.89 = 3,999.52/x
  3. Step 3: Cross multiply
    12,763.92x = 19,145.89 × 3,999.52
  4. Step 4: Simplify right side
    12,763.92x = 76,574,268.71
  5. Step 5: Solve for x
    x = 76,574,268.71/12,763.92
  6. Step 6: Final answer
    x = 5,999.28

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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.