Home / 12,489.26-17,235.54-7,457.31

Finding the Fourth Proportional to 12,489.26, 17,235.54 and 7,457.31

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Solution

The fourth proportional to 12,489.26, 17,235.54 and 7,457.31 is: 10,291.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.26 : 17,235.54 = 7,457.31 : x
  2. Step 2: Convert to fraction form
    12,489.26/17,235.54 = 7,457.31/x
  3. Step 3: Cross multiply
    12,489.26x = 17,235.54 × 7,457.31
  4. Step 4: Simplify right side
    12,489.26x = 128,530,764.80
  5. Step 5: Solve for x
    x = 128,530,764.80/12,489.26
  6. Step 6: Final answer
    x = 10,291.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.