Home / 20,071.21-27,688.09-13,348.21

Finding the Fourth Proportional to 20,071.21, 27,688.09 and 13,348.21

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Solution

The fourth proportional to 20,071.21, 27,688.09 and 13,348.21 is: 18,413.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.21 : 27,688.09 = 13,348.21 : x
  2. Step 2: Convert to fraction form
    20,071.21/27,688.09 = 13,348.21/x
  3. Step 3: Cross multiply
    20,071.21x = 27,688.09 × 13,348.21
  4. Step 4: Simplify right side
    20,071.21x = 369,586,439.82
  5. Step 5: Solve for x
    x = 369,586,439.82/20,071.21
  6. Step 6: Final answer
    x = 18,413.76

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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.