Home / 21,860.28-30,167.37-12,299.85

Finding the Fourth Proportional to 21,860.28, 30,167.37 and 12,299.85

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Solution

The fourth proportional to 21,860.28, 30,167.37 and 12,299.85 is: 16,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.28 : 30,167.37 = 12,299.85 : x
  2. Step 2: Convert to fraction form
    21,860.28/30,167.37 = 12,299.85/x
  3. Step 3: Cross multiply
    21,860.28x = 30,167.37 × 12,299.85
  4. Step 4: Simplify right side
    21,860.28x = 371,054,125.89
  5. Step 5: Solve for x
    x = 371,054,125.89/21,860.28
  6. Step 6: Final answer
    x = 16,973.90

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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.