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Finding the Fourth Proportional to 19,855.86, 27,400.02 and 10,904.58

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Solution

The fourth proportional to 19,855.86, 27,400.02 and 10,904.58 is: 15,047.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.86 : 27,400.02 = 10,904.58 : x
  2. Step 2: Convert to fraction form
    19,855.86/27,400.02 = 10,904.58/x
  3. Step 3: Cross multiply
    19,855.86x = 27,400.02 × 10,904.58
  4. Step 4: Simplify right side
    19,855.86x = 298,785,710.09
  5. Step 5: Solve for x
    x = 298,785,710.09/19,855.86
  6. Step 6: Final answer
    x = 15,047.73

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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.