Home / 22,309.45-30,787.89-12,238.31

Finding the Fourth Proportional to 22,309.45, 30,787.89 and 12,238.31

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Solution

The fourth proportional to 22,309.45, 30,787.89 and 12,238.31 is: 16,889.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,309.45 : 30,787.89 = 12,238.31 : x
  2. Step 2: Convert to fraction form
    22,309.45/30,787.89 = 12,238.31/x
  3. Step 3: Cross multiply
    22,309.45x = 30,787.89 × 12,238.31
  4. Step 4: Simplify right side
    22,309.45x = 376,791,819.04
  5. Step 5: Solve for x
    x = 376,791,819.04/22,309.45
  6. Step 6: Final answer
    x = 16,889.34

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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.