Home / 20,473.10-30,660.43-11,681.36

Finding the Fourth Proportional to 20,473.10, 30,660.43 and 11,681.36

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Solution

The fourth proportional to 20,473.10, 30,660.43 and 11,681.36 is: 17,493.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.10 : 30,660.43 = 11,681.36 : x
  2. Step 2: Convert to fraction form
    20,473.10/30,660.43 = 11,681.36/x
  3. Step 3: Cross multiply
    20,473.10x = 30,660.43 × 11,681.36
  4. Step 4: Simplify right side
    20,473.10x = 358,155,367.28
  5. Step 5: Solve for x
    x = 358,155,367.28/20,473.10
  6. Step 6: Final answer
    x = 17,493.95

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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.