Home / 12,210.23-18,315.09-3,890.82

Finding the Fourth Proportional to 12,210.23, 18,315.09 and 3,890.82

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Solution

The fourth proportional to 12,210.23, 18,315.09 and 3,890.82 is: 5,836.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.23 : 18,315.09 = 3,890.82 : x
  2. Step 2: Convert to fraction form
    12,210.23/18,315.09 = 3,890.82/x
  3. Step 3: Cross multiply
    12,210.23x = 18,315.09 × 3,890.82
  4. Step 4: Simplify right side
    12,210.23x = 71,260,718.47
  5. Step 5: Solve for x
    x = 71,260,718.47/12,210.23
  6. Step 6: Final answer
    x = 5,836.15

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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.