Home / 11,209.76-15,469.16-6,430.50

Finding the Fourth Proportional to 11,209.76, 15,469.16 and 6,430.50

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Solution

The fourth proportional to 11,209.76, 15,469.16 and 6,430.50 is: 8,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.76 : 15,469.16 = 6,430.50 : x
  2. Step 2: Convert to fraction form
    11,209.76/15,469.16 = 6,430.50/x
  3. Step 3: Cross multiply
    11,209.76x = 15,469.16 × 6,430.50
  4. Step 4: Simplify right side
    11,209.76x = 99,474,401.23
  5. Step 5: Solve for x
    x = 99,474,401.23/11,209.76
  6. Step 6: Final answer
    x = 8,873.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.