Home / 12,187.45-18,281.18-3,868.35

Finding the Fourth Proportional to 12,187.45, 18,281.18 and 3,868.35

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Solution

The fourth proportional to 12,187.45, 18,281.18 and 3,868.35 is: 5,802.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.45 : 18,281.18 = 3,868.35 : x
  2. Step 2: Convert to fraction form
    12,187.45/18,281.18 = 3,868.35/x
  3. Step 3: Cross multiply
    12,187.45x = 18,281.18 × 3,868.35
  4. Step 4: Simplify right side
    12,187.45x = 70,718,002.65
  5. Step 5: Solve for x
    x = 70,718,002.65/12,187.45
  6. Step 6: Final answer
    x = 5,802.53

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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.