Home / 22,419.76-30,945.72-14,989.36

Finding the Fourth Proportional to 22,419.76, 30,945.72 and 14,989.36

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Solution

The fourth proportional to 22,419.76, 30,945.72 and 14,989.36 is: 20,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,419.76 : 30,945.72 = 14,989.36 : x
  2. Step 2: Convert to fraction form
    22,419.76/30,945.72 = 14,989.36/x
  3. Step 3: Cross multiply
    22,419.76x = 30,945.72 × 14,989.36
  4. Step 4: Simplify right side
    22,419.76x = 463,856,537.54
  5. Step 5: Solve for x
    x = 463,856,537.54/22,419.76
  6. Step 6: Final answer
    x = 20,689.63

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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.