Home / 15,772.49-21,767.55-11,786.68

Finding the Fourth Proportional to 15,772.49, 21,767.55 and 11,786.68

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Solution

The fourth proportional to 15,772.49, 21,767.55 and 11,786.68 is: 16,266.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.49 : 21,767.55 = 11,786.68 : x
  2. Step 2: Convert to fraction form
    15,772.49/21,767.55 = 11,786.68/x
  3. Step 3: Cross multiply
    15,772.49x = 21,767.55 × 11,786.68
  4. Step 4: Simplify right side
    15,772.49x = 256,567,037.40
  5. Step 5: Solve for x
    x = 256,567,037.40/15,772.49
  6. Step 6: Final answer
    x = 16,266.75

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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.