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Finding the Fourth Proportional to 26,653.46, 39,978.97 and 10,012.21

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Solution

The fourth proportional to 26,653.46, 39,978.97 and 10,012.21 is: 15,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,653.46 : 39,978.97 = 10,012.21 : x
  2. Step 2: Convert to fraction form
    26,653.46/39,978.97 = 10,012.21/x
  3. Step 3: Cross multiply
    26,653.46x = 39,978.97 × 10,012.21
  4. Step 4: Simplify right side
    26,653.46x = 400,277,718.25
  5. Step 5: Solve for x
    x = 400,277,718.25/26,653.46
  6. Step 6: Final answer
    x = 15,017.85

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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.