Home / 30,541.86-45,780.82-12,782.70

Finding the Fourth Proportional to 30,541.86, 45,780.82 and 12,782.70

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Solution

The fourth proportional to 30,541.86, 45,780.82 and 12,782.70 is: 19,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,541.86 : 45,780.82 = 12,782.70 : x
  2. Step 2: Convert to fraction form
    30,541.86/45,780.82 = 12,782.70/x
  3. Step 3: Cross multiply
    30,541.86x = 45,780.82 × 12,782.70
  4. Step 4: Simplify right side
    30,541.86x = 585,202,455.86
  5. Step 5: Solve for x
    x = 585,202,455.86/30,541.86
  6. Step 6: Final answer
    x = 19,160.67

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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.