Home / 12,286.36-18,430.17-3,521.35

Finding the Fourth Proportional to 12,286.36, 18,430.17 and 3,521.35

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Solution

The fourth proportional to 12,286.36, 18,430.17 and 3,521.35 is: 5,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.36 : 18,430.17 = 3,521.35 : x
  2. Step 2: Convert to fraction form
    12,286.36/18,430.17 = 3,521.35/x
  3. Step 3: Cross multiply
    12,286.36x = 18,430.17 × 3,521.35
  4. Step 4: Simplify right side
    12,286.36x = 64,899,079.13
  5. Step 5: Solve for x
    x = 64,899,079.13/12,286.36
  6. Step 6: Final answer
    x = 5,282.21

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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.