Home / 20,139.83-30,201.98-7,653.28

Finding the Fourth Proportional to 20,139.83, 30,201.98 and 7,653.28

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Solution

The fourth proportional to 20,139.83, 30,201.98 and 7,653.28 is: 11,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.83 : 30,201.98 = 7,653.28 : x
  2. Step 2: Convert to fraction form
    20,139.83/30,201.98 = 7,653.28/x
  3. Step 3: Cross multiply
    20,139.83x = 30,201.98 × 7,653.28
  4. Step 4: Simplify right side
    20,139.83x = 231,144,153.12
  5. Step 5: Solve for x
    x = 231,144,153.12/20,139.83
  6. Step 6: Final answer
    x = 11,476.97

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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.