Home / 20,729.72-28,605.98-11,776.04

Finding the Fourth Proportional to 20,729.72, 28,605.98 and 11,776.04

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Solution

The fourth proportional to 20,729.72, 28,605.98 and 11,776.04 is: 16,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.72 : 28,605.98 = 11,776.04 : x
  2. Step 2: Convert to fraction form
    20,729.72/28,605.98 = 11,776.04/x
  3. Step 3: Cross multiply
    20,729.72x = 28,605.98 × 11,776.04
  4. Step 4: Simplify right side
    20,729.72x = 336,865,164.72
  5. Step 5: Solve for x
    x = 336,865,164.72/20,729.72
  6. Step 6: Final answer
    x = 16,250.35

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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.