Home / 20,677.05-28,540.83-11,730.50

Finding the Fourth Proportional to 20,677.05, 28,540.83 and 11,730.50

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Solution

The fourth proportional to 20,677.05, 28,540.83 and 11,730.50 is: 16,191.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.05 : 28,540.83 = 11,730.50 : x
  2. Step 2: Convert to fraction form
    20,677.05/28,540.83 = 11,730.50/x
  3. Step 3: Cross multiply
    20,677.05x = 28,540.83 × 11,730.50
  4. Step 4: Simplify right side
    20,677.05x = 334,798,048.95
  5. Step 5: Solve for x
    x = 334,798,048.95/20,677.05
  6. Step 6: Final answer
    x = 16,191.77

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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.