Home / 21,310.11-29,414.79-12,366.45

Finding the Fourth Proportional to 21,310.11, 29,414.79 and 12,366.45

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Solution

The fourth proportional to 21,310.11, 29,414.79 and 12,366.45 is: 17,069.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.11 : 29,414.79 = 12,366.45 : x
  2. Step 2: Convert to fraction form
    21,310.11/29,414.79 = 12,366.45/x
  3. Step 3: Cross multiply
    21,310.11x = 29,414.79 × 12,366.45
  4. Step 4: Simplify right side
    21,310.11x = 363,756,529.80
  5. Step 5: Solve for x
    x = 363,756,529.80/21,310.11
  6. Step 6: Final answer
    x = 17,069.67

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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.