Home / 20,305.36-30,456.94-6,453.28

Finding the Fourth Proportional to 20,305.36, 30,456.94 and 6,453.28

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Solution

The fourth proportional to 20,305.36, 30,456.94 and 6,453.28 is: 9,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.36 : 30,456.94 = 6,453.28 : x
  2. Step 2: Convert to fraction form
    20,305.36/30,456.94 = 6,453.28/x
  3. Step 3: Cross multiply
    20,305.36x = 30,456.94 × 6,453.28
  4. Step 4: Simplify right side
    20,305.36x = 196,547,161.76
  5. Step 5: Solve for x
    x = 196,547,161.76/20,305.36
  6. Step 6: Final answer
    x = 9,679.57

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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.