Home / 22,550.34-31,121.03-12,479.20

Finding the Fourth Proportional to 22,550.34, 31,121.03 and 12,479.20

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Solution

The fourth proportional to 22,550.34, 31,121.03 and 12,479.20 is: 17,222.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.34 : 31,121.03 = 12,479.20 : x
  2. Step 2: Convert to fraction form
    22,550.34/31,121.03 = 12,479.20/x
  3. Step 3: Cross multiply
    22,550.34x = 31,121.03 × 12,479.20
  4. Step 4: Simplify right side
    22,550.34x = 388,365,495.18
  5. Step 5: Solve for x
    x = 388,365,495.18/22,550.34
  6. Step 6: Final answer
    x = 17,222.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.