Home / 51,128.40-76,696.44-13,687.64

Finding the Fourth Proportional to 51,128.40, 76,696.44 and 13,687.64

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Solution

The fourth proportional to 51,128.40, 76,696.44 and 13,687.64 is: 20,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,128.40 : 76,696.44 = 13,687.64 : x
  2. Step 2: Convert to fraction form
    51,128.40/76,696.44 = 13,687.64/x
  3. Step 3: Cross multiply
    51,128.40x = 76,696.44 × 13,687.64
  4. Step 4: Simplify right side
    51,128.40x = 1,049,793,451.74
  5. Step 5: Solve for x
    x = 1,049,793,451.74/51,128.40
  6. Step 6: Final answer
    x = 20,532.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.