Home / 28,520.79-42,786.05-8,795.67

Finding the Fourth Proportional to 28,520.79, 42,786.05 and 8,795.67

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Solution

The fourth proportional to 28,520.79, 42,786.05 and 8,795.67 is: 13,195.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.79 : 42,786.05 = 8,795.67 : x
  2. Step 2: Convert to fraction form
    28,520.79/42,786.05 = 8,795.67/x
  3. Step 3: Cross multiply
    28,520.79x = 42,786.05 × 8,795.67
  4. Step 4: Simplify right side
    28,520.79x = 376,331,976.40
  5. Step 5: Solve for x
    x = 376,331,976.40/28,520.79
  6. Step 6: Final answer
    x = 13,195.01

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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.