Home / 19,457.56-29,172.90-12,863.86

Finding the Fourth Proportional to 19,457.56, 29,172.90 and 12,863.86

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Solution

The fourth proportional to 19,457.56, 29,172.90 and 12,863.86 is: 19,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,457.56 : 29,172.90 = 12,863.86 : x
  2. Step 2: Convert to fraction form
    19,457.56/29,172.90 = 12,863.86/x
  3. Step 3: Cross multiply
    19,457.56x = 29,172.90 × 12,863.86
  4. Step 4: Simplify right side
    19,457.56x = 375,276,101.39
  5. Step 5: Solve for x
    x = 375,276,101.39/19,457.56
  6. Step 6: Final answer
    x = 19,286.90

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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.