Home / 11,931.88-17,898-4,140.94

Finding the Fourth Proportional to 11,931.88, 17,898 and 4,140.94

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Solution

The fourth proportional to 11,931.88, 17,898 and 4,140.94 is: 6,211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.88 : 17,898 = 4,140.94 : x
  2. Step 2: Convert to fraction form
    11,931.88/17,898 = 4,140.94/x
  3. Step 3: Cross multiply
    11,931.88x = 17,898 × 4,140.94
  4. Step 4: Simplify right side
    11,931.88x = 74,114,544.12
  5. Step 5: Solve for x
    x = 74,114,544.12/11,931.88
  6. Step 6: Final answer
    x = 6,211.47

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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.