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Finding the Fourth Proportional to 34,123.55, 51,190.11 and 11,931.89

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Solution

The fourth proportional to 34,123.55, 51,190.11 and 11,931.89 is: 17,899.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,123.55 : 51,190.11 = 11,931.89 : x
  2. Step 2: Convert to fraction form
    34,123.55/51,190.11 = 11,931.89/x
  3. Step 3: Cross multiply
    34,123.55x = 51,190.11 × 11,931.89
  4. Step 4: Simplify right side
    34,123.55x = 610,794,761.61
  5. Step 5: Solve for x
    x = 610,794,761.61/34,123.55
  6. Step 6: Final answer
    x = 17,899.51

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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.