Home / 28,923.32-39,913.89-18,321.65

Finding the Fourth Proportional to 28,923.32, 39,913.89 and 18,321.65

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Solution

The fourth proportional to 28,923.32, 39,913.89 and 18,321.65 is: 25,283.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,923.32 : 39,913.89 = 18,321.65 : x
  2. Step 2: Convert to fraction form
    28,923.32/39,913.89 = 18,321.65/x
  3. Step 3: Cross multiply
    28,923.32x = 39,913.89 × 18,321.65
  4. Step 4: Simplify right side
    28,923.32x = 731,288,322.72
  5. Step 5: Solve for x
    x = 731,288,322.72/28,923.32
  6. Step 6: Final answer
    x = 25,283.69

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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.