Home / 18,358.12-25,310.64-15,835.32

Finding the Fourth Proportional to 18,358.12, 25,310.64 and 15,835.32

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Solution

The fourth proportional to 18,358.12, 25,310.64 and 15,835.32 is: 21,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.12 : 25,310.64 = 15,835.32 : x
  2. Step 2: Convert to fraction form
    18,358.12/25,310.64 = 15,835.32/x
  3. Step 3: Cross multiply
    18,358.12x = 25,310.64 × 15,835.32
  4. Step 4: Simplify right side
    18,358.12x = 400,802,083.80
  5. Step 5: Solve for x
    x = 400,802,083.80/18,358.12
  6. Step 6: Final answer
    x = 21,832.41

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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.