Home / 12,871.47-19,221.54-12,732.30

Finding the Fourth Proportional to 12,871.47, 19,221.54 and 12,732.30

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Solution

The fourth proportional to 12,871.47, 19,221.54 and 12,732.30 is: 19,013.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.47 : 19,221.54 = 12,732.30 : x
  2. Step 2: Convert to fraction form
    12,871.47/19,221.54 = 12,732.30/x
  3. Step 3: Cross multiply
    12,871.47x = 19,221.54 × 12,732.30
  4. Step 4: Simplify right side
    12,871.47x = 244,734,413.74
  5. Step 5: Solve for x
    x = 244,734,413.74/12,871.47
  6. Step 6: Final answer
    x = 19,013.71

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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.