Home / 20,457.06-28,230.78-11,504.58

Finding the Fourth Proportional to 20,457.06, 28,230.78 and 11,504.58

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Solution

The fourth proportional to 20,457.06, 28,230.78 and 11,504.58 is: 15,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.06 : 28,230.78 = 11,504.58 : x
  2. Step 2: Convert to fraction form
    20,457.06/28,230.78 = 11,504.58/x
  3. Step 3: Cross multiply
    20,457.06x = 28,230.78 × 11,504.58
  4. Step 4: Simplify right side
    20,457.06x = 324,783,298.33
  5. Step 5: Solve for x
    x = 324,783,298.33/20,457.06
  6. Step 6: Final answer
    x = 15,876.35

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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.