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Finding the Fourth Proportional to 26,651.71, 39,945.71 and 12,400.94

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Solution

The fourth proportional to 26,651.71, 39,945.71 and 12,400.94 is: 18,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,651.71 : 39,945.71 = 12,400.94 : x
  2. Step 2: Convert to fraction form
    26,651.71/39,945.71 = 12,400.94/x
  3. Step 3: Cross multiply
    26,651.71x = 39,945.71 × 12,400.94
  4. Step 4: Simplify right side
    26,651.71x = 495,364,133.21
  5. Step 5: Solve for x
    x = 495,364,133.21/26,651.71
  6. Step 6: Final answer
    x = 18,586.58

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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.