Home / 12,289.28-18,433.93-3,055.28

Finding the Fourth Proportional to 12,289.28, 18,433.93 and 3,055.28

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Solution

The fourth proportional to 12,289.28, 18,433.93 and 3,055.28 is: 4,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.28 : 18,433.93 = 3,055.28 : x
  2. Step 2: Convert to fraction form
    12,289.28/18,433.93 = 3,055.28/x
  3. Step 3: Cross multiply
    12,289.28x = 18,433.93 × 3,055.28
  4. Step 4: Simplify right side
    12,289.28x = 56,320,817.65
  5. Step 5: Solve for x
    x = 56,320,817.65/12,289.28
  6. Step 6: Final answer
    x = 4,582.92

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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.