Home / 22,320.94-30,805.74-12,887.68

Finding the Fourth Proportional to 22,320.94, 30,805.74 and 12,887.68

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Solution

The fourth proportional to 22,320.94, 30,805.74 and 12,887.68 is: 17,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,320.94 : 30,805.74 = 12,887.68 : x
  2. Step 2: Convert to fraction form
    22,320.94/30,805.74 = 12,887.68/x
  3. Step 3: Cross multiply
    22,320.94x = 30,805.74 × 12,887.68
  4. Step 4: Simplify right side
    22,320.94x = 397,014,519.28
  5. Step 5: Solve for x
    x = 397,014,519.28/22,320.94
  6. Step 6: Final answer
    x = 17,786.64

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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.