Home / 19,990.68-27,588.20-11,038.14

Finding the Fourth Proportional to 19,990.68, 27,588.20 and 11,038.14

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Solution

The fourth proportional to 19,990.68, 27,588.20 and 11,038.14 is: 15,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.68 : 27,588.20 = 11,038.14 : x
  2. Step 2: Convert to fraction form
    19,990.68/27,588.20 = 11,038.14/x
  3. Step 3: Cross multiply
    19,990.68x = 27,588.20 × 11,038.14
  4. Step 4: Simplify right side
    19,990.68x = 304,522,413.95
  5. Step 5: Solve for x
    x = 304,522,413.95/19,990.68
  6. Step 6: Final answer
    x = 15,233.22

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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.