Home / 11,861.12-17,780.16-4,937.60

Finding the Fourth Proportional to 11,861.12, 17,780.16 and 4,937.60

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Solution

The fourth proportional to 11,861.12, 17,780.16 and 4,937.60 is: 7,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.12 : 17,780.16 = 4,937.60 : x
  2. Step 2: Convert to fraction form
    11,861.12/17,780.16 = 4,937.60/x
  3. Step 3: Cross multiply
    11,861.12x = 17,780.16 × 4,937.60
  4. Step 4: Simplify right side
    11,861.12x = 87,791,318.02
  5. Step 5: Solve for x
    x = 87,791,318.02/11,861.12
  6. Step 6: Final answer
    x = 7,401.60

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1.5x scale

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.