Home / 27,722.76-38,259.04-15,786.60

Finding the Fourth Proportional to 27,722.76, 38,259.04 and 15,786.60

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Solution

The fourth proportional to 27,722.76, 38,259.04 and 15,786.60 is: 21,786.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.76 : 38,259.04 = 15,786.60 : x
  2. Step 2: Convert to fraction form
    27,722.76/38,259.04 = 15,786.60/x
  3. Step 3: Cross multiply
    27,722.76x = 38,259.04 × 15,786.60
  4. Step 4: Simplify right side
    27,722.76x = 603,980,160.86
  5. Step 5: Solve for x
    x = 603,980,160.86/27,722.76
  6. Step 6: Final answer
    x = 21,786.44

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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.