Home / 20,780.46-28,677.18-11,349.24

Finding the Fourth Proportional to 20,780.46, 28,677.18 and 11,349.24

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Solution

The fourth proportional to 20,780.46, 28,677.18 and 11,349.24 is: 15,662.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.46 : 28,677.18 = 11,349.24 : x
  2. Step 2: Convert to fraction form
    20,780.46/28,677.18 = 11,349.24/x
  3. Step 3: Cross multiply
    20,780.46x = 28,677.18 × 11,349.24
  4. Step 4: Simplify right side
    20,780.46x = 325,464,198.34
  5. Step 5: Solve for x
    x = 325,464,198.34/20,780.46
  6. Step 6: Final answer
    x = 15,662.03

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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.