Home / 25,657.32-38,431.94-13,139.30

Finding the Fourth Proportional to 25,657.32, 38,431.94 and 13,139.30

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Solution

The fourth proportional to 25,657.32, 38,431.94 and 13,139.30 is: 19,681.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,657.32 : 38,431.94 = 13,139.30 : x
  2. Step 2: Convert to fraction form
    25,657.32/38,431.94 = 13,139.30/x
  3. Step 3: Cross multiply
    25,657.32x = 38,431.94 × 13,139.30
  4. Step 4: Simplify right side
    25,657.32x = 504,968,789.24
  5. Step 5: Solve for x
    x = 504,968,789.24/25,657.32
  6. Step 6: Final answer
    x = 19,681.28

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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.