Home / 19,701.61-27,198.26-15,215.29

Finding the Fourth Proportional to 19,701.61, 27,198.26 and 15,215.29

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Solution

The fourth proportional to 19,701.61, 27,198.26 and 15,215.29 is: 21,004.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.61 : 27,198.26 = 15,215.29 : x
  2. Step 2: Convert to fraction form
    19,701.61/27,198.26 = 15,215.29/x
  3. Step 3: Cross multiply
    19,701.61x = 27,198.26 × 15,215.29
  4. Step 4: Simplify right side
    19,701.61x = 413,829,413.40
  5. Step 5: Solve for x
    x = 413,829,413.40/19,701.61
  6. Step 6: Final answer
    x = 21,004.85

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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.