Home / 20,674.53-28,530.69-11,243.08

Finding the Fourth Proportional to 20,674.53, 28,530.69 and 11,243.08

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Solution

The fourth proportional to 20,674.53, 28,530.69 and 11,243.08 is: 15,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.53 : 28,530.69 = 11,243.08 : x
  2. Step 2: Convert to fraction form
    20,674.53/28,530.69 = 11,243.08/x
  3. Step 3: Cross multiply
    20,674.53x = 28,530.69 × 11,243.08
  4. Step 4: Simplify right side
    20,674.53x = 320,772,830.13
  5. Step 5: Solve for x
    x = 320,772,830.13/20,674.53
  6. Step 6: Final answer
    x = 15,515.36

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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.