Home / 25,172.88-37,748.40-12,685.20

Finding the Fourth Proportional to 25,172.88, 37,748.40 and 12,685.20

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Solution

The fourth proportional to 25,172.88, 37,748.40 and 12,685.20 is: 19,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,172.88 : 37,748.40 = 12,685.20 : x
  2. Step 2: Convert to fraction form
    25,172.88/37,748.40 = 12,685.20/x
  3. Step 3: Cross multiply
    25,172.88x = 37,748.40 × 12,685.20
  4. Step 4: Simplify right side
    25,172.88x = 478,846,003.68
  5. Step 5: Solve for x
    x = 478,846,003.68/25,172.88
  6. Step 6: Final answer
    x = 19,022.30

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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.