Home / 12,606.36-18,908.80-4,286.40

Finding the Fourth Proportional to 12,606.36, 18,908.80 and 4,286.40

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Solution

The fourth proportional to 12,606.36, 18,908.80 and 4,286.40 is: 6,429.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.36 : 18,908.80 = 4,286.40 : x
  2. Step 2: Convert to fraction form
    12,606.36/18,908.80 = 4,286.40/x
  3. Step 3: Cross multiply
    12,606.36x = 18,908.80 × 4,286.40
  4. Step 4: Simplify right side
    12,606.36x = 81,050,680.32
  5. Step 5: Solve for x
    x = 81,050,680.32/12,606.36
  6. Step 6: Final answer
    x = 6,429.35

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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.