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Finding the Fourth Proportional to 19,230.16, 28,849.88 and 7,222.42

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Solution

The fourth proportional to 19,230.16, 28,849.88 and 7,222.42 is: 10,835.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.16 : 28,849.88 = 7,222.42 : x
  2. Step 2: Convert to fraction form
    19,230.16/28,849.88 = 7,222.42/x
  3. Step 3: Cross multiply
    19,230.16x = 28,849.88 × 7,222.42
  4. Step 4: Simplify right side
    19,230.16x = 208,365,950.31
  5. Step 5: Solve for x
    x = 208,365,950.31/19,230.16
  6. Step 6: Final answer
    x = 10,835.37

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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.