Home / 20,866.58-28,796.26-11,435.08

Finding the Fourth Proportional to 20,866.58, 28,796.26 and 11,435.08

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Solution

The fourth proportional to 20,866.58, 28,796.26 and 11,435.08 is: 15,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.58 : 28,796.26 = 11,435.08 : x
  2. Step 2: Convert to fraction form
    20,866.58/28,796.26 = 11,435.08/x
  3. Step 3: Cross multiply
    20,866.58x = 28,796.26 × 11,435.08
  4. Step 4: Simplify right side
    20,866.58x = 329,287,536.80
  5. Step 5: Solve for x
    x = 329,287,536.80/20,866.58
  6. Step 6: Final answer
    x = 15,780.62

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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.