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Finding the Fourth Proportional to 19,855.06, 27,400.08 and 11,359.06

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Solution

The fourth proportional to 19,855.06, 27,400.08 and 11,359.06 is: 15,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.06 : 27,400.08 = 11,359.06 : x
  2. Step 2: Convert to fraction form
    19,855.06/27,400.08 = 11,359.06/x
  3. Step 3: Cross multiply
    19,855.06x = 27,400.08 × 11,359.06
  4. Step 4: Simplify right side
    19,855.06x = 311,239,152.72
  5. Step 5: Solve for x
    x = 311,239,152.72/19,855.06
  6. Step 6: Final answer
    x = 15,675.56

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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.