Home / 20,780.44-28,677.16-11,349.24

Finding the Fourth Proportional to 20,780.44, 28,677.16 and 11,349.24

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Solution

The fourth proportional to 20,780.44, 28,677.16 and 11,349.24 is: 15,662.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.44 : 28,677.16 = 11,349.24 : x
  2. Step 2: Convert to fraction form
    20,780.44/28,677.16 = 11,349.24/x
  3. Step 3: Cross multiply
    20,780.44x = 28,677.16 × 11,349.24
  4. Step 4: Simplify right side
    20,780.44x = 325,463,971.36
  5. Step 5: Solve for x
    x = 325,463,971.36/20,780.44
  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.