Home / 21,366.32-29,485.98-11,934.90

Finding the Fourth Proportional to 21,366.32, 29,485.98 and 11,934.90

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Solution

The fourth proportional to 21,366.32, 29,485.98 and 11,934.90 is: 16,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.32 : 29,485.98 = 11,934.90 : x
  2. Step 2: Convert to fraction form
    21,366.32/29,485.98 = 11,934.90/x
  3. Step 3: Cross multiply
    21,366.32x = 29,485.98 × 11,934.90
  4. Step 4: Simplify right side
    21,366.32x = 351,912,222.70
  5. Step 5: Solve for x
    x = 351,912,222.70/21,366.32
  6. Step 6: Final answer
    x = 16,470.42

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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.