Home / 25,699.24-38,443.26-20,515.24

Finding the Fourth Proportional to 25,699.24, 38,443.26 and 20,515.24

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Solution

The fourth proportional to 25,699.24, 38,443.26 and 20,515.24 is: 30,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,699.24 : 38,443.26 = 20,515.24 : x
  2. Step 2: Convert to fraction form
    25,699.24/38,443.26 = 20,515.24/x
  3. Step 3: Cross multiply
    25,699.24x = 38,443.26 × 20,515.24
  4. Step 4: Simplify right side
    25,699.24x = 788,672,705.28
  5. Step 5: Solve for x
    x = 788,672,705.28/25,699.24
  6. Step 6: Final answer
    x = 30,688.56

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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.