Home / 22,018.90-30,388.20-12,585.64

Finding the Fourth Proportional to 22,018.90, 30,388.20 and 12,585.64

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Solution

The fourth proportional to 22,018.90, 30,388.20 and 12,585.64 is: 17,369.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,018.90 : 30,388.20 = 12,585.64 : x
  2. Step 2: Convert to fraction form
    22,018.90/30,388.20 = 12,585.64/x
  3. Step 3: Cross multiply
    22,018.90x = 30,388.20 × 12,585.64
  4. Step 4: Simplify right side
    22,018.90x = 382,454,945.45
  5. Step 5: Solve for x
    x = 382,454,945.45/22,018.90
  6. Step 6: Final answer
    x = 17,369.39

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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.