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Finding the Fourth Proportional to 19,201.86, 28,813.73 and 15,330.87

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Solution

The fourth proportional to 19,201.86, 28,813.73 and 15,330.87 is: 23,005.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.86 : 28,813.73 = 15,330.87 : x
  2. Step 2: Convert to fraction form
    19,201.86/28,813.73 = 15,330.87/x
  3. Step 3: Cross multiply
    19,201.86x = 28,813.73 × 15,330.87
  4. Step 4: Simplify right side
    19,201.86x = 441,739,472.19
  5. Step 5: Solve for x
    x = 441,739,472.19/19,201.86
  6. Step 6: Final answer
    x = 23,005.04

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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.