Home / 21,898.55-30,220.03-12,467.12

Finding the Fourth Proportional to 21,898.55, 30,220.03 and 12,467.12

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Solution

The fourth proportional to 21,898.55, 30,220.03 and 12,467.12 is: 17,204.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.55 : 30,220.03 = 12,467.12 : x
  2. Step 2: Convert to fraction form
    21,898.55/30,220.03 = 12,467.12/x
  3. Step 3: Cross multiply
    21,898.55x = 30,220.03 × 12,467.12
  4. Step 4: Simplify right side
    21,898.55x = 376,756,604.90
  5. Step 5: Solve for x
    x = 376,756,604.90/21,898.55
  6. Step 6: Final answer
    x = 17,204.64

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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.