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Finding the Fourth Proportional to 19,009.93, 28,494.84 and 7,905.44

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Solution

The fourth proportional to 19,009.93, 28,494.84 and 7,905.44 is: 11,849.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.93 : 28,494.84 = 7,905.44 : x
  2. Step 2: Convert to fraction form
    19,009.93/28,494.84 = 7,905.44/x
  3. Step 3: Cross multiply
    19,009.93x = 28,494.84 × 7,905.44
  4. Step 4: Simplify right side
    19,009.93x = 225,264,105.46
  5. Step 5: Solve for x
    x = 225,264,105.46/19,009.93
  6. Step 6: Final answer
    x = 11,849.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.