Home / 47,493.12-71,239.68-12,435.78

Finding the Fourth Proportional to 47,493.12, 71,239.68 and 12,435.78

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Solution

The fourth proportional to 47,493.12, 71,239.68 and 12,435.78 is: 18,653.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,493.12 : 71,239.68 = 12,435.78 : x
  2. Step 2: Convert to fraction form
    47,493.12/71,239.68 = 12,435.78/x
  3. Step 3: Cross multiply
    47,493.12x = 71,239.68 × 12,435.78
  4. Step 4: Simplify right side
    47,493.12x = 885,920,987.75
  5. Step 5: Solve for x
    x = 885,920,987.75/47,493.12
  6. Step 6: Final answer
    x = 18,653.67

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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.