Home / 20,733.83-28,617.30-13,178.69

Finding the Fourth Proportional to 20,733.83, 28,617.30 and 13,178.69

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Solution

The fourth proportional to 20,733.83, 28,617.30 and 13,178.69 is: 18,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.83 : 28,617.30 = 13,178.69 : x
  2. Step 2: Convert to fraction form
    20,733.83/28,617.30 = 13,178.69/x
  3. Step 3: Cross multiply
    20,733.83x = 28,617.30 × 13,178.69
  4. Step 4: Simplify right side
    20,733.83x = 377,138,382.25
  5. Step 5: Solve for x
    x = 377,138,382.25/20,733.83
  6. Step 6: Final answer
    x = 18,189.52

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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.