Home / 12,145.36-18,219.12-6,300.40

Finding the Fourth Proportional to 12,145.36, 18,219.12 and 6,300.40

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Solution

The fourth proportional to 12,145.36, 18,219.12 and 6,300.40 is: 9,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.36 : 18,219.12 = 6,300.40 : x
  2. Step 2: Convert to fraction form
    12,145.36/18,219.12 = 6,300.40/x
  3. Step 3: Cross multiply
    12,145.36x = 18,219.12 × 6,300.40
  4. Step 4: Simplify right side
    12,145.36x = 114,787,743.65
  5. Step 5: Solve for x
    x = 114,787,743.65/12,145.36
  6. Step 6: Final answer
    x = 9,451.16

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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.