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Finding the Fourth Proportional to 12,942.99, 19,410.73 and 5,043.74

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Solution

The fourth proportional to 12,942.99, 19,410.73 and 5,043.74 is: 7,564.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.99 : 19,410.73 = 5,043.74 : x
  2. Step 2: Convert to fraction form
    12,942.99/19,410.73 = 5,043.74/x
  3. Step 3: Cross multiply
    12,942.99x = 19,410.73 × 5,043.74
  4. Step 4: Simplify right side
    12,942.99x = 97,902,722.35
  5. Step 5: Solve for x
    x = 97,902,722.35/12,942.99
  6. Step 6: Final answer
    x = 7,564.15

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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.