Home / 21,834.57-30,131.82-12,760.46

Finding the Fourth Proportional to 21,834.57, 30,131.82 and 12,760.46

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Solution

The fourth proportional to 21,834.57, 30,131.82 and 12,760.46 is: 17,609.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.57 : 30,131.82 = 12,760.46 : x
  2. Step 2: Convert to fraction form
    21,834.57/30,131.82 = 12,760.46/x
  3. Step 3: Cross multiply
    21,834.57x = 30,131.82 × 12,760.46
  4. Step 4: Simplify right side
    21,834.57x = 384,495,846.17
  5. Step 5: Solve for x
    x = 384,495,846.17/21,834.57
  6. Step 6: Final answer
    x = 17,609.50

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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.