Home / 11,387.81-17,090.82-4,818.57

Finding the Fourth Proportional to 11,387.81, 17,090.82 and 4,818.57

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Solution

The fourth proportional to 11,387.81, 17,090.82 and 4,818.57 is: 7,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.81 : 17,090.82 = 4,818.57 : x
  2. Step 2: Convert to fraction form
    11,387.81/17,090.82 = 4,818.57/x
  3. Step 3: Cross multiply
    11,387.81x = 17,090.82 × 4,818.57
  4. Step 4: Simplify right side
    11,387.81x = 82,353,312.53
  5. Step 5: Solve for x
    x = 82,353,312.53/11,387.81
  6. Step 6: Final answer
    x = 7,231.71

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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.