Home / 10,518.84-15,771.78-4,971.96

Finding the Fourth Proportional to 10,518.84, 15,771.78 and 4,971.96

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Solution

The fourth proportional to 10,518.84, 15,771.78 and 4,971.96 is: 7,454.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.84 : 15,771.78 = 4,971.96 : x
  2. Step 2: Convert to fraction form
    10,518.84/15,771.78 = 4,971.96/x
  3. Step 3: Cross multiply
    10,518.84x = 15,771.78 × 4,971.96
  4. Step 4: Simplify right side
    10,518.84x = 78,416,659.29
  5. Step 5: Solve for x
    x = 78,416,659.29/10,518.84
  6. Step 6: Final answer
    x = 7,454.88

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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.