Home / 19,688.22-29,498.90-11,880.62

Finding the Fourth Proportional to 19,688.22, 29,498.90 and 11,880.62

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Solution

The fourth proportional to 19,688.22, 29,498.90 and 11,880.62 is: 17,800.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.22 : 29,498.90 = 11,880.62 : x
  2. Step 2: Convert to fraction form
    19,688.22/29,498.90 = 11,880.62/x
  3. Step 3: Cross multiply
    19,688.22x = 29,498.90 × 11,880.62
  4. Step 4: Simplify right side
    19,688.22x = 350,465,221.32
  5. Step 5: Solve for x
    x = 350,465,221.32/19,688.22
  6. Step 6: Final answer
    x = 17,800.76

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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.