Home / 22,218.08-30,664.48-12,784.80

Finding the Fourth Proportional to 22,218.08, 30,664.48 and 12,784.80

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Solution

The fourth proportional to 22,218.08, 30,664.48 and 12,784.80 is: 17,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.08 : 30,664.48 = 12,784.80 : x
  2. Step 2: Convert to fraction form
    22,218.08/30,664.48 = 12,784.80/x
  3. Step 3: Cross multiply
    22,218.08x = 30,664.48 × 12,784.80
  4. Step 4: Simplify right side
    22,218.08x = 392,039,243.90
  5. Step 5: Solve for x
    x = 392,039,243.90/22,218.08
  6. Step 6: Final answer
    x = 17,645.06

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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.