Home / 26,789.69-36,962.28-21,106.80

Finding the Fourth Proportional to 26,789.69, 36,962.28 and 21,106.80

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Solution

The fourth proportional to 26,789.69, 36,962.28 and 21,106.80 is: 29,121.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,789.69 : 36,962.28 = 21,106.80 : x
  2. Step 2: Convert to fraction form
    26,789.69/36,962.28 = 21,106.80/x
  3. Step 3: Cross multiply
    26,789.69x = 36,962.28 × 21,106.80
  4. Step 4: Simplify right side
    26,789.69x = 780,155,451.50
  5. Step 5: Solve for x
    x = 780,155,451.50/26,789.69
  6. Step 6: Final answer
    x = 29,121.48

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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.