Home / 12,664.04-18,993.82-3,430.76

Finding the Fourth Proportional to 12,664.04, 18,993.82 and 3,430.76

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Solution

The fourth proportional to 12,664.04, 18,993.82 and 3,430.76 is: 5,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.04 : 18,993.82 = 3,430.76 : x
  2. Step 2: Convert to fraction form
    12,664.04/18,993.82 = 3,430.76/x
  3. Step 3: Cross multiply
    12,664.04x = 18,993.82 × 3,430.76
  4. Step 4: Simplify right side
    12,664.04x = 65,163,237.90
  5. Step 5: Solve for x
    x = 65,163,237.90/12,664.04
  6. Step 6: Final answer
    x = 5,145.53

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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.