Home / 21,986.46-30,342.82-12,423.04

Finding the Fourth Proportional to 21,986.46, 30,342.82 and 12,423.04

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Solution

The fourth proportional to 21,986.46, 30,342.82 and 12,423.04 is: 17,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.46 : 30,342.82 = 12,423.04 : x
  2. Step 2: Convert to fraction form
    21,986.46/30,342.82 = 12,423.04/x
  3. Step 3: Cross multiply
    21,986.46x = 30,342.82 × 12,423.04
  4. Step 4: Simplify right side
    21,986.46x = 376,950,066.57
  5. Step 5: Solve for x
    x = 376,950,066.57/21,986.46
  6. Step 6: Final answer
    x = 17,144.65

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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.