Home / 18,634.08-25,728.12-15,316.32

Finding the Fourth Proportional to 18,634.08, 25,728.12 and 15,316.32

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Solution

The fourth proportional to 18,634.08, 25,728.12 and 15,316.32 is: 21,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.08 : 25,728.12 = 15,316.32 : x
  2. Step 2: Convert to fraction form
    18,634.08/25,728.12 = 15,316.32/x
  3. Step 3: Cross multiply
    18,634.08x = 25,728.12 × 15,316.32
  4. Step 4: Simplify right side
    18,634.08x = 394,060,118.92
  5. Step 5: Solve for x
    x = 394,060,118.92/18,634.08
  6. Step 6: Final answer
    x = 21,147.28

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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.