Home / 19,431.92-26,809.12-11,470.16

Finding the Fourth Proportional to 19,431.92, 26,809.12 and 11,470.16

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Solution

The fourth proportional to 19,431.92, 26,809.12 and 11,470.16 is: 15,824.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.92 : 26,809.12 = 11,470.16 : x
  2. Step 2: Convert to fraction form
    19,431.92/26,809.12 = 11,470.16/x
  3. Step 3: Cross multiply
    19,431.92x = 26,809.12 × 11,470.16
  4. Step 4: Simplify right side
    19,431.92x = 307,504,895.86
  5. Step 5: Solve for x
    x = 307,504,895.86/19,431.92
  6. Step 6: Final answer
    x = 15,824.73

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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.