Home / 15,772.34-21,767.36-11,786.55

Finding the Fourth Proportional to 15,772.34, 21,767.36 and 11,786.55

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Solution

The fourth proportional to 15,772.34, 21,767.36 and 11,786.55 is: 16,266.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.34 : 21,767.36 = 11,786.55 : x
  2. Step 2: Convert to fraction form
    15,772.34/21,767.36 = 11,786.55/x
  3. Step 3: Cross multiply
    15,772.34x = 21,767.36 × 11,786.55
  4. Step 4: Simplify right side
    15,772.34x = 256,562,018.08
  5. Step 5: Solve for x
    x = 256,562,018.08/15,772.34
  6. Step 6: Final answer
    x = 16,266.58

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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.