Home / 20,729.04-28,605.80-11,776.48

Finding the Fourth Proportional to 20,729.04, 28,605.80 and 11,776.48

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Solution

The fourth proportional to 20,729.04, 28,605.80 and 11,776.48 is: 16,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.04 : 28,605.80 = 11,776.48 : x
  2. Step 2: Convert to fraction form
    20,729.04/28,605.80 = 11,776.48/x
  3. Step 3: Cross multiply
    20,729.04x = 28,605.80 × 11,776.48
  4. Step 4: Simplify right side
    20,729.04x = 336,875,631.58
  5. Step 5: Solve for x
    x = 336,875,631.58/20,729.04
  6. Step 6: Final answer
    x = 16,251.39

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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.