Home / 12,905.84-19,362.09-4,140.83

Finding the Fourth Proportional to 12,905.84, 19,362.09 and 4,140.83

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Solution

The fourth proportional to 12,905.84, 19,362.09 and 4,140.83 is: 6,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.84 : 19,362.09 = 4,140.83 : x
  2. Step 2: Convert to fraction form
    12,905.84/19,362.09 = 4,140.83/x
  3. Step 3: Cross multiply
    12,905.84x = 19,362.09 × 4,140.83
  4. Step 4: Simplify right side
    12,905.84x = 80,175,123.13
  5. Step 5: Solve for x
    x = 80,175,123.13/12,905.84
  6. Step 6: Final answer
    x = 6,212.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.