Home / 39,105.64-58,662.58-12,812.43

Finding the Fourth Proportional to 39,105.64, 58,662.58 and 12,812.43

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Solution

The fourth proportional to 39,105.64, 58,662.58 and 12,812.43 is: 19,219.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,105.64 : 58,662.58 = 12,812.43 : x
  2. Step 2: Convert to fraction form
    39,105.64/58,662.58 = 12,812.43/x
  3. Step 3: Cross multiply
    39,105.64x = 58,662.58 × 12,812.43
  4. Step 4: Simplify right side
    39,105.64x = 751,610,199.87
  5. Step 5: Solve for x
    x = 751,610,199.87/39,105.64
  6. Step 6: Final answer
    x = 19,219.99

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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.