Home / 25,125.35-37,688.85-12,638.57

Finding the Fourth Proportional to 25,125.35, 37,688.85 and 12,638.57

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Solution

The fourth proportional to 25,125.35, 37,688.85 and 12,638.57 is: 18,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,125.35 : 37,688.85 = 12,638.57 : x
  2. Step 2: Convert to fraction form
    25,125.35/37,688.85 = 12,638.57/x
  3. Step 3: Cross multiply
    25,125.35x = 37,688.85 × 12,638.57
  4. Step 4: Simplify right side
    25,125.35x = 476,332,980.50
  5. Step 5: Solve for x
    x = 476,332,980.50/25,125.35
  6. Step 6: Final answer
    x = 18,958.27

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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.