Home / 21,834.26-30,129.66-12,401

Finding the Fourth Proportional to 21,834.26, 30,129.66 and 12,401

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Solution

The fourth proportional to 21,834.26, 30,129.66 and 12,401 is: 17,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.26 : 30,129.66 = 12,401 : x
  2. Step 2: Convert to fraction form
    21,834.26/30,129.66 = 12,401/x
  3. Step 3: Cross multiply
    21,834.26x = 30,129.66 × 12,401
  4. Step 4: Simplify right side
    21,834.26x = 373,637,913.66
  5. Step 5: Solve for x
    x = 373,637,913.66/21,834.26
  6. Step 6: Final answer
    x = 17,112.46

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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.