Home / 19,156.91-26,440.17-11,990.15

Finding the Fourth Proportional to 19,156.91, 26,440.17 and 11,990.15

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Solution

The fourth proportional to 19,156.91, 26,440.17 and 11,990.15 is: 16,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.91 : 26,440.17 = 11,990.15 : x
  2. Step 2: Convert to fraction form
    19,156.91/26,440.17 = 11,990.15/x
  3. Step 3: Cross multiply
    19,156.91x = 26,440.17 × 11,990.15
  4. Step 4: Simplify right side
    19,156.91x = 317,021,604.33
  5. Step 5: Solve for x
    x = 317,021,604.33/19,156.91
  6. Step 6: Final answer
    x = 16,548.68

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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.