Home / 19,358.22-29,039.13-5,318.40

Finding the Fourth Proportional to 19,358.22, 29,039.13 and 5,318.40

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Solution

The fourth proportional to 19,358.22, 29,039.13 and 5,318.40 is: 7,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.22 : 29,039.13 = 5,318.40 : x
  2. Step 2: Convert to fraction form
    19,358.22/29,039.13 = 5,318.40/x
  3. Step 3: Cross multiply
    19,358.22x = 29,039.13 × 5,318.40
  4. Step 4: Simplify right side
    19,358.22x = 154,441,708.99
  5. Step 5: Solve for x
    x = 154,441,708.99/19,358.22
  6. Step 6: Final answer
    x = 7,978.09

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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.