Home / 18,666.75-25,761.33-12,380.34

Finding the Fourth Proportional to 18,666.75, 25,761.33 and 12,380.34

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Solution

The fourth proportional to 18,666.75, 25,761.33 and 12,380.34 is: 17,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.75 : 25,761.33 = 12,380.34 : x
  2. Step 2: Convert to fraction form
    18,666.75/25,761.33 = 12,380.34/x
  3. Step 3: Cross multiply
    18,666.75x = 25,761.33 × 12,380.34
  4. Step 4: Simplify right side
    18,666.75x = 318,934,024.25
  5. Step 5: Solve for x
    x = 318,934,024.25/18,666.75
  6. Step 6: Final answer
    x = 17,085.68

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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.