Home / 20,675.07-28,531.58-11,243.57

Finding the Fourth Proportional to 20,675.07, 28,531.58 and 11,243.57

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Solution

The fourth proportional to 20,675.07, 28,531.58 and 11,243.57 is: 15,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.07 : 28,531.58 = 11,243.57 : x
  2. Step 2: Convert to fraction form
    20,675.07/28,531.58 = 11,243.57/x
  3. Step 3: Cross multiply
    20,675.07x = 28,531.58 × 11,243.57
  4. Step 4: Simplify right side
    20,675.07x = 320,796,618.06
  5. Step 5: Solve for x
    x = 320,796,618.06/20,675.07
  6. Step 6: Final answer
    x = 15,516.11

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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.