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Finding the Fourth Proportional to 19,149.51, 28,724.22 and 9,123.82

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Solution

The fourth proportional to 19,149.51, 28,724.22 and 9,123.82 is: 13,685.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.51 : 28,724.22 = 9,123.82 : x
  2. Step 2: Convert to fraction form
    19,149.51/28,724.22 = 9,123.82/x
  3. Step 3: Cross multiply
    19,149.51x = 28,724.22 × 9,123.82
  4. Step 4: Simplify right side
    19,149.51x = 262,074,661.08
  5. Step 5: Solve for x
    x = 262,074,661.08/19,149.51
  6. Step 6: Final answer
    x = 13,685.71

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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.