Home / 12,429.27-18,639.21-4,106.79

Finding the Fourth Proportional to 12,429.27, 18,639.21 and 4,106.79

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Solution

The fourth proportional to 12,429.27, 18,639.21 and 4,106.79 is: 6,158.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.27 : 18,639.21 = 4,106.79 : x
  2. Step 2: Convert to fraction form
    12,429.27/18,639.21 = 4,106.79/x
  3. Step 3: Cross multiply
    12,429.27x = 18,639.21 × 4,106.79
  4. Step 4: Simplify right side
    12,429.27x = 76,547,321.24
  5. Step 5: Solve for x
    x = 76,547,321.24/12,429.27
  6. Step 6: Final answer
    x = 6,158.63

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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.