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Finding the Fourth Proportional to 19,065.52, 28,590.36 and 7,372

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Solution

The fourth proportional to 19,065.52, 28,590.36 and 7,372 is: 11,054.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,065.52 : 28,590.36 = 7,372 : x
  2. Step 2: Convert to fraction form
    19,065.52/28,590.36 = 7,372/x
  3. Step 3: Cross multiply
    19,065.52x = 28,590.36 × 7,372
  4. Step 4: Simplify right side
    19,065.52x = 210,768,133.92
  5. Step 5: Solve for x
    x = 210,768,133.92/19,065.52
  6. Step 6: Final answer
    x = 11,054.94

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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.