Home / 22,109.28-30,511.44-12,679.68

Finding the Fourth Proportional to 22,109.28, 30,511.44 and 12,679.68

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Solution

The fourth proportional to 22,109.28, 30,511.44 and 12,679.68 is: 17,498.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,109.28 : 30,511.44 = 12,679.68 : x
  2. Step 2: Convert to fraction form
    22,109.28/30,511.44 = 12,679.68/x
  3. Step 3: Cross multiply
    22,109.28x = 30,511.44 × 12,679.68
  4. Step 4: Simplify right side
    22,109.28x = 386,875,295.54
  5. Step 5: Solve for x
    x = 386,875,295.54/22,109.28
  6. Step 6: Final answer
    x = 17,498.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.