Home / 20,475.49-28,256.73-11,523.31

Finding the Fourth Proportional to 20,475.49, 28,256.73 and 11,523.31

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Solution

The fourth proportional to 20,475.49, 28,256.73 and 11,523.31 is: 15,902.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.49 : 28,256.73 = 11,523.31 : x
  2. Step 2: Convert to fraction form
    20,475.49/28,256.73 = 11,523.31/x
  3. Step 3: Cross multiply
    20,475.49x = 28,256.73 × 11,523.31
  4. Step 4: Simplify right side
    20,475.49x = 325,611,059.38
  5. Step 5: Solve for x
    x = 325,611,059.38/20,475.49
  6. Step 6: Final answer
    x = 15,902.48

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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.