Home / 13,639.70-20,346.22-13,414.16

Finding the Fourth Proportional to 13,639.70, 20,346.22 and 13,414.16

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Solution

The fourth proportional to 13,639.70, 20,346.22 and 13,414.16 is: 20,009.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.70 : 20,346.22 = 13,414.16 : x
  2. Step 2: Convert to fraction form
    13,639.70/20,346.22 = 13,414.16/x
  3. Step 3: Cross multiply
    13,639.70x = 20,346.22 × 13,414.16
  4. Step 4: Simplify right side
    13,639.70x = 272,927,450.48
  5. Step 5: Solve for x
    x = 272,927,450.48/13,639.70
  6. Step 6: Final answer
    x = 20,009.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.