Home / 12,669.39-19,007.73-3,905.55

Finding the Fourth Proportional to 12,669.39, 19,007.73 and 3,905.55

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Solution

The fourth proportional to 12,669.39, 19,007.73 and 3,905.55 is: 5,859.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.39 : 19,007.73 = 3,905.55 : x
  2. Step 2: Convert to fraction form
    12,669.39/19,007.73 = 3,905.55/x
  3. Step 3: Cross multiply
    12,669.39x = 19,007.73 × 3,905.55
  4. Step 4: Simplify right side
    12,669.39x = 74,235,639.90
  5. Step 5: Solve for x
    x = 74,235,639.90/12,669.39
  6. Step 6: Final answer
    x = 5,859.45

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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.