Home / 18,429.29-25,406.64-15,585.22

Finding the Fourth Proportional to 18,429.29, 25,406.64 and 15,585.22

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Solution

The fourth proportional to 18,429.29, 25,406.64 and 15,585.22 is: 21,485.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.29 : 25,406.64 = 15,585.22 : x
  2. Step 2: Convert to fraction form
    18,429.29/25,406.64 = 15,585.22/x
  3. Step 3: Cross multiply
    18,429.29x = 25,406.64 × 15,585.22
  4. Step 4: Simplify right side
    18,429.29x = 395,968,105.62
  5. Step 5: Solve for x
    x = 395,968,105.62/18,429.29
  6. Step 6: Final answer
    x = 21,485.81

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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.