Home / 16,128.76-22,258.26-9,418.68

Finding the Fourth Proportional to 16,128.76, 22,258.26 and 9,418.68

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Solution

The fourth proportional to 16,128.76, 22,258.26 and 9,418.68 is: 12,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,128.76 : 22,258.26 = 9,418.68 : x
  2. Step 2: Convert to fraction form
    16,128.76/22,258.26 = 9,418.68/x
  3. Step 3: Cross multiply
    16,128.76x = 22,258.26 × 9,418.68
  4. Step 4: Simplify right side
    16,128.76x = 209,643,428.30
  5. Step 5: Solve for x
    x = 209,643,428.30/16,128.76
  6. Step 6: Final answer
    x = 12,998.11

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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.