Home / 20,674.58-28,530.09-11,243.14

Finding the Fourth Proportional to 20,674.58, 28,530.09 and 11,243.14

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Solution

The fourth proportional to 20,674.58, 28,530.09 and 11,243.14 is: 15,515.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.58 : 28,530.09 = 11,243.14 : x
  2. Step 2: Convert to fraction form
    20,674.58/28,530.09 = 11,243.14/x
  3. Step 3: Cross multiply
    20,674.58x = 28,530.09 × 11,243.14
  4. Step 4: Simplify right side
    20,674.58x = 320,767,724.76
  5. Step 5: Solve for x
    x = 320,767,724.76/20,674.58
  6. Step 6: Final answer
    x = 15,515.08

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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.