Home / 25,379.16-38,021.08-21,245.64

Finding the Fourth Proportional to 25,379.16, 38,021.08 and 21,245.64

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Solution

The fourth proportional to 25,379.16, 38,021.08 and 21,245.64 is: 31,828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,379.16 : 38,021.08 = 21,245.64 : x
  2. Step 2: Convert to fraction form
    25,379.16/38,021.08 = 21,245.64/x
  3. Step 3: Cross multiply
    25,379.16x = 38,021.08 × 21,245.64
  4. Step 4: Simplify right side
    25,379.16x = 807,782,178.09
  5. Step 5: Solve for x
    x = 807,782,178.09/25,379.16
  6. Step 6: Final answer
    x = 31,828.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.