Home / 22,219.06-30,665.64-12,785.80

Finding the Fourth Proportional to 22,219.06, 30,665.64 and 12,785.80

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Solution

The fourth proportional to 22,219.06, 30,665.64 and 12,785.80 is: 17,646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,219.06 : 30,665.64 = 12,785.80 : x
  2. Step 2: Convert to fraction form
    22,219.06/30,665.64 = 12,785.80/x
  3. Step 3: Cross multiply
    22,219.06x = 30,665.64 × 12,785.80
  4. Step 4: Simplify right side
    22,219.06x = 392,084,739.91
  5. Step 5: Solve for x
    x = 392,084,739.91/22,219.06
  6. Step 6: Final answer
    x = 17,646.32

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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.