Home / 12,305.40-18,457.45-3,539.97

Finding the Fourth Proportional to 12,305.40, 18,457.45 and 3,539.97

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Solution

The fourth proportional to 12,305.40, 18,457.45 and 3,539.97 is: 5,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.40 : 18,457.45 = 3,539.97 : x
  2. Step 2: Convert to fraction form
    12,305.40/18,457.45 = 3,539.97/x
  3. Step 3: Cross multiply
    12,305.40x = 18,457.45 × 3,539.97
  4. Step 4: Simplify right side
    12,305.40x = 65,338,819.28
  5. Step 5: Solve for x
    x = 65,338,819.28/12,305.40
  6. Step 6: Final answer
    x = 5,309.77

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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.