Home / 12,725.80-18,995.74-11,787.82

Finding the Fourth Proportional to 12,725.80, 18,995.74 and 11,787.82

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Solution

The fourth proportional to 12,725.80, 18,995.74 and 11,787.82 is: 17,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.80 : 18,995.74 = 11,787.82 : x
  2. Step 2: Convert to fraction form
    12,725.80/18,995.74 = 11,787.82/x
  3. Step 3: Cross multiply
    12,725.80x = 18,995.74 × 11,787.82
  4. Step 4: Simplify right side
    12,725.80x = 223,918,363.89
  5. Step 5: Solve for x
    x = 223,918,363.89/12,725.80
  6. Step 6: Final answer
    x = 17,595.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.