Home / 20,410.42-28,166.14-11,457.69

Finding the Fourth Proportional to 20,410.42, 28,166.14 and 11,457.69

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Solution

The fourth proportional to 20,410.42, 28,166.14 and 11,457.69 is: 15,811.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.42 : 28,166.14 = 11,457.69 : x
  2. Step 2: Convert to fraction form
    20,410.42/28,166.14 = 11,457.69/x
  3. Step 3: Cross multiply
    20,410.42x = 28,166.14 × 11,457.69
  4. Step 4: Simplify right side
    20,410.42x = 322,718,900.62
  5. Step 5: Solve for x
    x = 322,718,900.62/20,410.42
  6. Step 6: Final answer
    x = 15,811.48

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Double scale
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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.