Home / 12,209.16-18,315.07-3,887.22

Finding the Fourth Proportional to 12,209.16, 18,315.07 and 3,887.22

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Solution

The fourth proportional to 12,209.16, 18,315.07 and 3,887.22 is: 5,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.16 : 18,315.07 = 3,887.22 : x
  2. Step 2: Convert to fraction form
    12,209.16/18,315.07 = 3,887.22/x
  3. Step 3: Cross multiply
    12,209.16x = 18,315.07 × 3,887.22
  4. Step 4: Simplify right side
    12,209.16x = 71,194,621.77
  5. Step 5: Solve for x
    x = 71,194,621.77/12,209.16
  6. Step 6: Final answer
    x = 5,831.25

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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.