Home / 25,156.80-37,712.88-12,660.48

Finding the Fourth Proportional to 25,156.80, 37,712.88 and 12,660.48

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Solution

The fourth proportional to 25,156.80, 37,712.88 and 12,660.48 is: 18,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,156.80 : 37,712.88 = 12,660.48 : x
  2. Step 2: Convert to fraction form
    25,156.80/37,712.88 = 12,660.48/x
  3. Step 3: Cross multiply
    25,156.80x = 37,712.88 × 12,660.48
  4. Step 4: Simplify right side
    25,156.80x = 477,463,162.98
  5. Step 5: Solve for x
    x = 477,463,162.98/25,156.80
  6. Step 6: Final answer
    x = 18,979.49

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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.