Home / 20,758.43-31,137.71-9,663.59

Finding the Fourth Proportional to 20,758.43, 31,137.71 and 9,663.59

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Solution

The fourth proportional to 20,758.43, 31,137.71 and 9,663.59 is: 14,495.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.43 : 31,137.71 = 9,663.59 : x
  2. Step 2: Convert to fraction form
    20,758.43/31,137.71 = 9,663.59/x
  3. Step 3: Cross multiply
    20,758.43x = 31,137.71 × 9,663.59
  4. Step 4: Simplify right side
    20,758.43x = 300,901,858.97
  5. Step 5: Solve for x
    x = 300,901,858.97/20,758.43
  6. Step 6: Final answer
    x = 14,495.41

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1.5x scale

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.