Home / 19,776.54-27,288.98-11,391.42

Finding the Fourth Proportional to 19,776.54, 27,288.98 and 11,391.42

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Solution

The fourth proportional to 19,776.54, 27,288.98 and 11,391.42 is: 15,718.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.54 : 27,288.98 = 11,391.42 : x
  2. Step 2: Convert to fraction form
    19,776.54/27,288.98 = 11,391.42/x
  3. Step 3: Cross multiply
    19,776.54x = 27,288.98 × 11,391.42
  4. Step 4: Simplify right side
    19,776.54x = 310,860,232.55
  5. Step 5: Solve for x
    x = 310,860,232.55/19,776.54
  6. Step 6: Final answer
    x = 15,718.64

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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.