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Finding the Fourth Proportional to 26,653.86, 39,980.80 and 7,934.17

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Solution

The fourth proportional to 26,653.86, 39,980.80 and 7,934.17 is: 11,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,653.86 : 39,980.80 = 7,934.17 : x
  2. Step 2: Convert to fraction form
    26,653.86/39,980.80 = 7,934.17/x
  3. Step 3: Cross multiply
    26,653.86x = 39,980.80 × 7,934.17
  4. Step 4: Simplify right side
    26,653.86x = 317,214,463.94
  5. Step 5: Solve for x
    x = 317,214,463.94/26,653.86
  6. Step 6: Final answer
    x = 11,901.26

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Similar ratio
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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.