Home / 25,969.86-38,954.45-12,640.77

Finding the Fourth Proportional to 25,969.86, 38,954.45 and 12,640.77

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Solution

The fourth proportional to 25,969.86, 38,954.45 and 12,640.77 is: 18,960.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,969.86 : 38,954.45 = 12,640.77 : x
  2. Step 2: Convert to fraction form
    25,969.86/38,954.45 = 12,640.77/x
  3. Step 3: Cross multiply
    25,969.86x = 38,954.45 × 12,640.77
  4. Step 4: Simplify right side
    25,969.86x = 492,414,274.53
  5. Step 5: Solve for x
    x = 492,414,274.53/25,969.86
  6. Step 6: Final answer
    x = 18,960.99

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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.