Home / 12,765.69-19,157.18-4,445.78

Finding the Fourth Proportional to 12,765.69, 19,157.18 and 4,445.78

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Solution

The fourth proportional to 12,765.69, 19,157.18 and 4,445.78 is: 6,671.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.69 : 19,157.18 = 4,445.78 : x
  2. Step 2: Convert to fraction form
    12,765.69/19,157.18 = 4,445.78/x
  3. Step 3: Cross multiply
    12,765.69x = 19,157.18 × 4,445.78
  4. Step 4: Simplify right side
    12,765.69x = 85,168,489.69
  5. Step 5: Solve for x
    x = 85,168,489.69/12,765.69
  6. Step 6: Final answer
    x = 6,671.67

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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.