Home / 22,310.66-30,789-12,238.45

Finding the Fourth Proportional to 22,310.66, 30,789 and 12,238.45

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Solution

The fourth proportional to 22,310.66, 30,789 and 12,238.45 is: 16,889.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,310.66 : 30,789 = 12,238.45 : x
  2. Step 2: Convert to fraction form
    22,310.66/30,789 = 12,238.45/x
  3. Step 3: Cross multiply
    22,310.66x = 30,789 × 12,238.45
  4. Step 4: Simplify right side
    22,310.66x = 376,809,637.05
  5. Step 5: Solve for x
    x = 376,809,637.05/22,310.66
  6. Step 6: Final answer
    x = 16,889.22

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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.