Home / 25,125.36-37,688.84-12,638.56

Finding the Fourth Proportional to 25,125.36, 37,688.84 and 12,638.56

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Solution

The fourth proportional to 25,125.36, 37,688.84 and 12,638.56 is: 18,958.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,125.36 : 37,688.84 = 12,638.56 : x
  2. Step 2: Convert to fraction form
    25,125.36/37,688.84 = 12,638.56/x
  3. Step 3: Cross multiply
    25,125.36x = 37,688.84 × 12,638.56
  4. Step 4: Simplify right side
    25,125.36x = 476,332,665.67
  5. Step 5: Solve for x
    x = 476,332,665.67/25,125.36
  6. Step 6: Final answer
    x = 18,958.24

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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.