Home / 12,742.42-19,113.62-8,358.86

Finding the Fourth Proportional to 12,742.42, 19,113.62 and 8,358.86

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Solution

The fourth proportional to 12,742.42, 19,113.62 and 8,358.86 is: 12,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.42 : 19,113.62 = 8,358.86 : x
  2. Step 2: Convert to fraction form
    12,742.42/19,113.62 = 8,358.86/x
  3. Step 3: Cross multiply
    12,742.42x = 19,113.62 × 8,358.86
  4. Step 4: Simplify right side
    12,742.42x = 159,768,073.67
  5. Step 5: Solve for x
    x = 159,768,073.67/12,742.42
  6. Step 6: Final answer
    x = 12,538.28

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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.