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Finding the Fourth Proportional to 34,239.70, 51,358.83 and 15,771.70

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Solution

The fourth proportional to 34,239.70, 51,358.83 and 15,771.70 is: 23,657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,239.70 : 51,358.83 = 15,771.70 : x
  2. Step 2: Convert to fraction form
    34,239.70/51,358.83 = 15,771.70/x
  3. Step 3: Cross multiply
    34,239.70x = 51,358.83 × 15,771.70
  4. Step 4: Simplify right side
    34,239.70x = 810,016,059.11
  5. Step 5: Solve for x
    x = 810,016,059.11/34,239.70
  6. Step 6: Final answer
    x = 23,657.22

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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.