Home / 18,288.96-25,240.32-15,299.52

Finding the Fourth Proportional to 18,288.96, 25,240.32 and 15,299.52

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Solution

The fourth proportional to 18,288.96, 25,240.32 and 15,299.52 is: 21,114.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.96 : 25,240.32 = 15,299.52 : x
  2. Step 2: Convert to fraction form
    18,288.96/25,240.32 = 15,299.52/x
  3. Step 3: Cross multiply
    18,288.96x = 25,240.32 × 15,299.52
  4. Step 4: Simplify right side
    18,288.96x = 386,164,780.65
  5. Step 5: Solve for x
    x = 386,164,780.65/18,288.96
  6. Step 6: Final answer
    x = 21,114.64

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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.