Home / 21,479.24-29,657.94-13,930.85

Finding the Fourth Proportional to 21,479.24, 29,657.94 and 13,930.85

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Solution

The fourth proportional to 21,479.24, 29,657.94 and 13,930.85 is: 19,235.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.24 : 29,657.94 = 13,930.85 : x
  2. Step 2: Convert to fraction form
    21,479.24/29,657.94 = 13,930.85/x
  3. Step 3: Cross multiply
    21,479.24x = 29,657.94 × 13,930.85
  4. Step 4: Simplify right side
    21,479.24x = 413,160,313.45
  5. Step 5: Solve for x
    x = 413,160,313.45/21,479.24
  6. Step 6: Final answer
    x = 19,235.33

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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.