Home / 21,377.94-29,494.98-12,423.75

Finding the Fourth Proportional to 21,377.94, 29,494.98 and 12,423.75

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Solution

The fourth proportional to 21,377.94, 29,494.98 and 12,423.75 is: 17,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.94 : 29,494.98 = 12,423.75 : x
  2. Step 2: Convert to fraction form
    21,377.94/29,494.98 = 12,423.75/x
  3. Step 3: Cross multiply
    21,377.94x = 29,494.98 × 12,423.75
  4. Step 4: Simplify right side
    21,377.94x = 366,438,257.78
  5. Step 5: Solve for x
    x = 366,438,257.78/21,377.94
  6. Step 6: Final answer
    x = 17,140.95

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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.