Home / 26,764.70-36,920.40-21,078.50

Finding the Fourth Proportional to 26,764.70, 36,920.40 and 21,078.50

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Solution

The fourth proportional to 26,764.70, 36,920.40 and 21,078.50 is: 29,076.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,764.70 : 36,920.40 = 21,078.50 : x
  2. Step 2: Convert to fraction form
    26,764.70/36,920.40 = 21,078.50/x
  3. Step 3: Cross multiply
    26,764.70x = 36,920.40 × 21,078.50
  4. Step 4: Simplify right side
    26,764.70x = 778,226,651.40
  5. Step 5: Solve for x
    x = 778,226,651.40/26,764.70
  6. Step 6: Final answer
    x = 29,076.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.